You work under the assumption that there will be no gains in goods and services or intelligence or value. But that's the exact same gamble that Ycombinator and

You work under the assumption that there will be no gains in goods and services or intelligence or value. But that's the exact same gamble that Ycombinator and other investors take. They inject capital to give a fledgling company a chance. Some make it and some don't. But in the end there has been new value and services added. Similarly, if a drug addict can kill an addiction. Or if a new mother can spend time raising her family, rather than a gang raising it. Or a young person can afford college without having to get crushed with student debt. Or a man can get a new suit of clothes and a laptop to get a better job. Then these things all go a long way to creating new value that wasn't there before. People think of value as cash money. But it's not. Money as has been said is just a proxy for value. But it's not the only one.