A lot of people get those electronic things like phones and cable services via deals which lock them into contracts. The price of electronics also drops over time in a way that rent or mortgage payments do not:
From the American Enterprise Institute, I think the graph at this story pretty much explains it:
https://www.aei.org/carpe-diem/chart-of-the-day-century-price-changes-1997-to-2017/
As you can see, the price of housing has increased over the last ~20 years to be slightly higher than the median overall inflation of 55.6% (the line for housing is just
slightly over the black line), while TV, toys, software, and cellphone services have declined over that same period from ~25 to ~100%.
This also means, of course, that the amount that they would save by not buying these things or signing the contracts for these things is nowhere near what they would need to save to pay their rent/mortgage on a month-to-month basis, since those luxury items are so cheap. Think about it: Netflix standard level service is
$13/month, while the average mortgage payment is
$1,029/month. So mortgage payments are approximately
80 times more expensive than having things like Netflix,
9 times more expensive than
the average monthly cellphone bill, etc. Things like TVs and such are not really comparable, since they're usually a one time purchase only made maybe once a decade (the average lifespan of a flat screen LCD TV is claimed by manufacturers to be
100,000 hours -- about 11 years).
So these are not really fair comparisons with non-elastic, monthly, increasingly expensive things like rent or mortgage payments.