Which is more profitable – an MMO with a monthly subscription or a free-to-play game?

For example, in PvP, there are some really cool items that cost approximately 1 million rubles in real money. Not to mention a whole bunch of other items.

Well, I don't know then. If they are bought, I don't think it's in the CIS countries. And in other countries, WoW is more expensive, much more.

and in free-to-play games, almost every player who has a job spends at least a thousand rubles. That's also quite stable.

I still don't think it's almost everyone, and I don't think the number of people who consistently spend a significant amount of money on donations is very large.