I'm going to go ahead and move on from the physical vs spiritual argument, since I've said what I want, and it is at best a tangential issue.
The Real issue is whether or not the binding is literal. I am not a preterist, so I don't know why you are trying to prove a futurist second coming to me. I also agree that symbols portray literal events. For example, the binding of Satan in the pit is not literal, but he literally does not have the power to wipe out the gospel or the church now. I agree that pictures to not make the realities any less real. Satan is literally unable to destroy the church, and that is a real reality.
If you are going to demonstrate that the bind/shutting of Satan should be taken as literal, then you need some sort of evidence to back up that claim.
Also, for the third time, I will repeat my questions since you keep ignoring them:
The book of Revelation is clearly full of symbolism and vivid imagery that should not be interpreted literally, so why should this be an exception?
What do you believe Gospel account means by Satan being bound? Yes, it is figurative. But metaphors represent something. What do you think it means?
Revelation is not one of the Gospels. Why should the account; future, yet to happen, be analogous to the binding in the Gospels?
Revelation is different than any other time in History. For one, Satan is walking around as Satan, not disguised as a serpent like in the Garden of Eden. Satan has been known by a few people since 500BC. Hiding behind the scenes. Paul called Satan the man of lawlessness. 2 Thessalonians 2. Satan does not want the world to know he literally exists. Then they would understand that God literally exists.
Secondly, Revelation is about Jesus Christ walking around on earth again. Jesus had a 3.5 year ministry in the first century. There will be the rest of His time on earth. That is not figurative, and spiritual. Jesus claims He will return in the Olivet Discourse. The whole world will no longer be spiritually blind. That happens at the 6th Seal. That happens before the Trumpets. Because Jesus brings the angels and the Trump of God to earth. That is not some metaphor. The birth of Jesus was physical and was not a metaphor. The Second Coming is physical and not a metaphor. The binding of Satan is physical and not a metaphor.
That the binding of Satan happens at Armageddon or the end of the 7th Trumpet, is not a figurative notion. It is the real deal, because all will know God and Satan do physically exist in Creation. In the Gospels and the majority of the NT there is a spiritual battle presented which is literal as well. Not many fight spiritually today, because the cares of this life has turned reality into words on a page. Many books on the topic, but way more books than action. Many have been involved and it is just as physically exhausting as a physical workout or job. The binding of Satan in the pit is literal, because Satan is going to be physically removed from earth, and heaven. Satan is literally fired! Out of a job. And no one to replace him either.
Q: The book of Revelation is clearly full of symbolism and vivid imagery that should not be interpreted literally, so why should this be an exception?
There is nothing figurative in the following:
"Next I saw an angel coming down from heaven, who had the key to the Abyss and a great chain in his hand. He seized Satan [the Adversary], and chained him up for a thousand years."
John saw a literal angel coming down literally from the literal heaven. In chapter 9 the same literal key, literally opened the shaft. Now the shaft was literally closed and locked back up. Jude 1:6
6 And the angels that did not keep within their original authority, but abandoned their proper sphere, he has kept in darkness, bound with everlasting chains for the Judgment of the Great Day.
Revelation 9 is that day of judgment when the pit is opened. Now in Revelation Satan is literally placed where the angels had been for thousands of years. The third of the angels who followed Satan were literally in the same pit. They could not leave, and now, neither will Satan for the last 1000 years of current creation.
So are 1/3rd of created angels figurative? Is the pit of darkness they were in figurative? Is Satan figurative never getting this figurative group of angels to follow him? Do physical angels need physical chains to keep them in a physical pit, where eventually only Satan will be chained up? Is not the earth literal either?
Q: What do you believe the Gospel account means by Satan being bound?
Not physical, but spiritual warfare.
Christ coming to earth put the Lord God front and center in Israel to a rebellious spiritual leadership. God is going to do the same thing very soon. Jesus Christ will be on earth to finish the 70th week of Daniel 9.