offering an option without a reasonable way of making it become reality is called populism.
that's why Brexit failed so miserably.
removing bots reduces the number of games played drastically.
new or bad players also have far less chance to win against veteran players.
Rental income would dimnish if the entire Bot base can no longer make a profit, and players who dont want to play manual constantly will likely start adding cards to the rental market instead of taking them off.
you will have people who own cards and bot on several alts start selling or renting those cards also.
on top of the fact that town halls mentioned botting was legal on several occasions and it wouldn't change in the future.
removing a method of getting a profit from assets = asset value drops, thats simply how a market works.
removing predictability by having populism overrule old verdicts = less chance of long term investing.