You're missing my point. Yes, bronze league bots will make less profit. My point is that bots will simply invest to play in a higher rank league. They can even rent cards for more profit. When the bots have to rent/buy up all the decent cards to play in higher tiers that takes those cards out of real players hands and raises prices - as opposed to just letting them farm rewards in bronze with starter cards and selling all rewards off to players. This hurts the economy and minting cards is not bad its good (there's a cap so it literally cannot hurt the economy minting more cards). My theory is devs probably just want to slow down minting because they can't keep up with new ideas for future expansions.

A verification system would be a better solution. One account per IP and doing a captcha or something to verify you are human every x number of games. They aleady added deminishing returns for DEC. Add more DEC sinks and remove potion drops for low ranks. Just a few thoughts off the top of my head.

The goal is making players human, and stripping rewards make more humans quit playing alongside some bots. More brainstorming is required.