This is utter gibberish, mate.
Loads of games manage to have them just fine. Just not ones where the population is mindlessly fixated on DPS. Most support classes in other games are more about a combination of survivability, utility, and DPS gains, not just DPS gains like you seem to think. But either way, you're factually wrong - other games manage to have them and they work fine there. It's especially bizarre as fuck that you said "video games", because you're including CRPGs, where it's even more common to have support classes. It's like you're trying to ruin your own argument. Maybe you just don't understand what a support class is?
Many games don't even use the "holy trinity" setup of tank/DPS/healer, either. In those games support classes tend to fit in even better. But as they're "video games", you're apparently saying that's impossible lol. Jesus wept.
And "the healer problem"? Wtf the early 2000s called, they wanted their problem back. It's been "the tank problem", if you mean it's hard to find them, for like, 10-12 years, in WoW.
Maybe next time instead of "video games", try "holy-trinity-style hotbar MMORPGs"? You'd still be wrong but at least it would be less spectacular.