I DM’d a group that tried to optimize every situation, and every turn off combat. That’s okay as long as it stays fun, but once they start spinning their wheels, or one player turns combat into a slog, then I take measures.
In my experience (and from what I've heard of other groups) optimisers are rarely the cause of this problem, usually it's the more casual or inexperienced players.
This reminds me of a comic I saw a while ago where the BBEG was gloating that he could only be killed by the sword next to him that couldn't be pulled from the stone. The barbarian picks up the BBEG and swings him at the sword.
I'm sure other people have brought up rich people taking a huge share of it already, but there's also the sheer number of people determined to work in the arts. If there's, say, ten billion dollars to go around, it sounds like a lot, but if it's split between a couple of million artists it doesn't go very far.
In my experience (and from what I've heard of other groups) optimisers are rarely the cause of this problem, usually it's the more casual or inexperienced players.