Online cheating as existed for as long as online games have existed. Long before companies cared about online gaming as a serious generator of revenue. There is a certain percentage of the population which enjoys hurting others and making them have a bad time. The anonymity of online games allows them to be antisocial with very few social repercussions.

I think equating having the option of KLAC with Windows is totally disingenuous. There are countless other differentiators. You would be free to just not use KLAC if you so desired.