This is incorrect, historically you'll pay a ~2%-3% loss via inflation if you keep your money in cash. If you invest (making it capital) in bonds or securities then you will see accumulation, but thats actually a risk premium.
> Additionally, wealthy people can use securities as collateral for near zero interest lifetime loans which also bypass having to pay income tax.
This is true, its typically called "Buy, Borrow, Die" but the reality is that it is only available to a very small percent of wealthy individuals and exists because of the way inheritance is handled ("stepped-up basis"). Even reasonably (not fabulously) wealthy people will still pay retail rates on the loans making the tactic basically ineffective. Last I heard you needed something like 100M+ liquid for lenders to even consider it (presumably, because they will make more off of some other deal with you)
And for inherited rental property, there is another huge loophole: you can can depreciate the full market value of an asset that you got for free. That’s a substantial tax benefit for many years.
This makes sense. Borrowing for income in most scenarios is strictly worse financially than recognizing conventional income if you actually do the math. Wealthy people are optimizing for financial outcomes, not avoiding taxes per se.
[0] https://www.sciencedirect.com/science/article/abs/pii/S00472...
This is just Internet mythology. The IRS would go after such arrangements very quickly - the IRS has the Applicable Federal Rate for loans. Though this really isn't an issue with banks as they are not charities and tend to want to make money.