In addition to what zeroclip said, the cool thing is that blockchains are running all the time and needs no active input to pay, maintain, upgrade, etc by users

In addition to what zeroclip said, the cool thing is that blockchains are running all the time and needs no active input to pay, maintain, upgrade, etc by users of the chain. Operations are paid for through transaction costs on the chain, no need to pay a provider monthly to give you a hosted Postgres and make sure they maintain their SLA. Each transaction pays for the resources it uses on chain. That means that operations that use blockchains as DBs get per-access priced access to an ever-running DB with no maintenance necessary. I'll be concrete. The game I linked, Dark Forest, has a "lobby" feature which lets you create a new game and invite others to join that game, like a game lobby. I play occasionally with friends in a lobby. $1 can give you enough to play many games at time of this writing. The authors of the game need to pay for nothing to host me while my friends and I play an independent game paying only what we need, mere cents. The only problem is the game uses xDAI a token which is a bit of a pain to get (you need to buy DAI and get it converted.) IMO that's pretty good.