This isn't exactly true. For things like bread, yes it _is_ true, nobody will let you take out an asset backed loan. For someone with significant assets, large purchases can be funded by asset backed loan. These are available from high street banks, e.g. [0].

> That can be considered income

No, here's where you're wrong. It's considered capital gains and you're taxed on the difference between what you liquated the asset for, and the value of the asset when you were given it. Here in the UK, capital gains rates are tied to your income level, so if you make under £50,000/year you will pay 10% capital gains, or 20% if you make more. In the US the bands are similar (0, 15, 20%), but I'm not sure how they're calculated sorry.

If we ignore the lowest band of income tax for comparison purposes, someone who makes 1 million in salary here in the UK will pay 45% roughly of that in tax. Someone who makes it all in capital gains will pay 10%

[0] https://www.wellsfargo.com/cib/institutional-investing/asset...

But ultra rich people actually don’t. They can just incur debts using their wealth and use that instead.