Games without gatcha are arguably more about grinding from an equal starting point and only unless the gamer uses bots/cheats or pays someone for what they want like level/progress an account or their account when not grinding themselves.
Gatcha brings the unequal reality we live in, well into the game world and where someone can spend their way to the goal without grinding as much. The reality we live, very much reflects the new game worlds that are now in existence thanks to gatcha and it's kind of remarkable that people are upset about it. We live everyday outside of games where one's misfortune or fortune reflects their life from the start to the end. The shortcuts that can be taken, what can be quickly achieved with funds, and that goes for anything from healthcare to lifestyle to even academics.