I know why there are so few long-term winners at poker

[Slappy002]

What's this business about the games getting tougher?

It's bunk, and I'll explain why.

Fish can learn odds. Fish can learn TAG. Fish can learn to lay down hands. Fish can learn all of these wonderful things.
Winning players can learn to adjust and exploit said fish.

That is why the games will never really get tougher for the true winner, they will simply require adjustment.

This is the reason why only %5 of players are lifetime winners.