- 2 won't use AI at all and simply be left behind and stagnate (or go bust)
- 2 will partly use AI, and maybe keep up, maybe not
- 1 will go nuts vibe an entire app and explode (see Tea app or whatever)
- 4 will have an inefficient app, suffer reputational damage, lose some money, or similar, but probably survive
- 1 will hit the jackpot and get a 100M ARR company with 4 people.
Stats are of course completely made up, but you get the point.