But the system today where there is unlimited supply means the price will always go down and no one is going to buy it.
Stop giving interest to people who power down and you solved both the price and the redistribution problem
The supply is not "unlimited", it's all in the White Paper...
STEEM inflation only last for 3 years or whatever and then tapers off.
The rate of inflation is around 300% today and will stabilize around 100% in the future. Even at this rate people who power down every week will have their steem power balance gradually increase. Something that keeps growing when you keep taking things out off is by definition unlimited which is the case here, people will be able to cash out every week and still have their steem power go up, that's unlimited.