"I've seen people get rich off crypto" and I've seen hundreds of gambling addicts lose their house and put their family on the street when the bet didn't go right. Even when you're talking about serious coins, ignoring the rug pulls. That money comes from somewhere. Who's holding the bag? Crypto people tend to have an infinite dose of "f** you got mine" even if they didn't get theirs.
Yep, for every person who gains a dollar someone had to lose a dollar. No value was created. In this way crypto is actually a less than zero sum game since some money is always lost to the machine through sending to abandoned wallets, lost private keys, etc. So on average everyone loses.
I don’t know though how sound this argument really is as I don’t see what value bitcoin has outside its monetary worth.
Can you really use this stuff? Not really. At best is a difficult to scale — if at all — database for transactions.
Though similar things could be said about paper money as well — that it is nothing but the agreed upon value — but at least that can exchange hands far more easily in a much more scalable and flexible manner.