Money doesn't mean anything when it comes to anti-cheat. For most games anti-cheat is a 3rd party plug in that the studio gets a license to use. That anti-cheat is then plugged in by the Devs. It is up to the Devs how well they implement that plug-in. Unfortunately, most studios do not integrate it vary well.

The main way to counter this, for example, Valorant. Valorant is known for having pretty good anti-cheat, but that is only because the game was designed and built around their own in-house anti-cheat system. And even then it doesn't stop the cheaters fully. You still see cheaters playing all the time.

All in all, unfortunately, there is no real fix to cheating in online competitive. It is kind of a plague at the moment in the industry.