F2P gamer became the Immortal in Diablo Immortal without spending a dime
YouTube author wudijo published a video where he has shown how his group become Immortals.
Diablo Immortal has gathered a lot of hate from media and its community. This is one of the reasons why the project was rescheduled to July 7th in the Southeastern Asia. Moreover, the Chinese release has been suspended indefinitely. The game also has a somewhat aggressive monetization — some gamers have found that you need 10 years or $100K to become the best in this game. Actually, all of these reasons have led Diablo Immortal's rating to 0.4 on Metacritic.
But there's always the light at the end of tunnel. A gamer called wudijo has published a video where he and his friends fought Immortals and won. This means they became the next Immortals without spending a single cent on this game. You might call it luck, but these people proved the impossible; they even called their Reign “Stay a Whale & Listen”.
This situation is very different from the one that happened to another streamer — he lost around $25K on a 5-star gem. I think that these examples show that you don't always need a fat wallet to be the best in mobile games.