You say "don't perform and you'll be back in the 2s and out of the club at years end". If you don't think clubs give players ultimatums then you're very naive.
What is the result from ultimatums?
They get rewarded in $$$ to play to the best they can, they fail, those rewards eventually stop, its not like 1973 when the coach yelled at them, they understand the consequences of their efforts. Which is why Im pretty sure they are just not trying, as some think
They seriously don't need to be told about the consequences of their performances they are fully aware of them