The actual economic data would suggest otherwise:
The finance and investment sector accounts for approximately 34% of New York’s total economic output
The sector is responsible for about 8% of the city’s tax revenue and 23% of the state’s tax revenue, according to 2018 figures.
One in every nine jobs in NYC is in the financial services industry, and each securities job supports two additional jobs in other sectors, amplifying the sector’s economic influence.
Highlights The U.S. job market was mixed but still fairly solid in May, despite a further decline in Federal Government employment. Unemployment held steady but labor force participation fell. New York City’s April jobs report was mixed: a 6,300 private-sector job gain was largely offset by a...
comptroller.nyc.gov
The NYC financial sector is responsible for a dominant share of the federal taxes paid from New York State, given the sector’s outsize role in generating high incomes and corporate profits.
Reader's Digest Version: "If the seat of the financial sector hadn't changed from Philly to NYC over 100 years ago, the two states would likely be swapped on the Donor vs. Recipient list"
With regards to California:
The entertainment industry generates over $40 billion in economic activity and supports more than 270,000 supporting jobs in the state.
For every $100 million in profits a movie or TV studio nets on a project, $21 million goes to the federal government.
(not to mention all of the famous actors and TV personalities out there paying federal income taxes on their 6, 7, and 8 figure salaries)
With regards to their "fortuitous location", that accounts for a huge amount of revenue as well.
The fact that they occupy such a long piece of coastline, accounts for $1.7 trillion in GDP, accounting for 80% of the state’s total GDP and $662 billion in wages.
Readers digest version, if that wasn't the seat of the nation's entertainment industry, and the country was laid out like this and they didn't occupy a huge amount of coastline:
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California would be just another "flyover state" that people didn't care about.