Why would I model a serious transaction as a "game" with achievements?
> they are playing with funny money
YES YES YES YES! Negative real interest rates are pretty damn funny! We should have ended them long ago. We are now beginning to pay the price. You have identified a key way to help end the trends that you do not want to see.
> People's income is so crushed
They are being crushed by inflation! Another blow against ultra low interest rates! RATE HIKE! RATE HIKE! RATE HIKE!
> Why can't people rent to other people like it was done in the past? Why aren't regular people being allowed to play this game?
You're totally allowed!! Go buy a house, and rent out the house. You will probably need money for a down payment, but you can still get a mortgage at negative real interest rates — and if it is in the US and it is a conforming mortgage (<$647200) you will benefit from an interest rate subsidy from the quasi-public mortgage-buying entities, Fannie Mae and Freddie Mac. It might be a great investment! I am buying a house (for myself) and have locked a rate; with current inflation numbers I can expect $2000/month in return simply from inflation eating away at my debt!
The main contraindication here is that you will experience risk, and you may be intolerant to that risk. Your investment could end up underwater, and it's hard to diversify because it's such a big asset relative to your income. This may explain why corporations are better able to do it these days.
> Even if it was a bad game to play, they're still taking houses away from those who want to buy and not rent.
It's true! Existing home-owners are not required to sell to another aspiring home-owner, and are free to sell their property as they see fit. This means that aspiring home-owners must compete with renters (and the people who renters pay, corporations). The renters (and the corporations they pay) may be willing to offer more! The existing home-owner benefits, while the aspiring home-owner does not!
There are lots of ways to use the law to strongarm people into dealing with a politically favored class, at the expense of a politically disfavored class! Some of them are discussed in these threads! I'm not a fan, myself, and believe it will harm the nation and its economy by distorting the economy into doing different things that make less sense and leave the nation overall poorer as a consequence with less money to spend on things that are more meaningful, but if you would benefit maybe you would be a fan!