man those renting prices... you're renting them CP for almost nothing :p hahaha. The worse is I don't think we can do anything now... Bots are too powerful, they got too much CP/SPS airdrop, they weight too much in the overall economy. As you already pointed out, every would crumble if we'd remove bots. I think you have to either be here for the money (sell everything/rent as the bots are doing) or be here for the game and accept your asset will lose value over time.
So far, I could only think of those 2 ways to reducing bots impact

1. Stop buying any farmable assets (Rewards til they are being printed, sps til airdrop is live, and to some extend CL cause packs are in loot chest), Those will only lose value as bots generate a mass supply. They generate SPS through airdrops with the the CP they have. If you buy those, accept they'll keep losing value until the.
2. Correctly price your renting cards.. otherwise you're giving bots a freepass. I myself don't rent anything under 150 CP/DEC anymore