8-10% annual rent increases are not unusual at all in NYC/LA/SF - maybe you can get a 10% raise every year, but I'd wager even most HN posters can't.
For this reason alone, it makes sense to grind to homeownership as quickly as possible if you live in a top tier market. Those locations also de-risk homeownership a bit since they have the largest job markets and highest real estate demand.
If you live anywhere else in the US then I agree, renting starts to look a lot more attractive.