Possible thoughts on the bans that has taking place

I have two US accounts 2 at which I botted with one was banned this last wave the other one was not. Considering we are nearing Christmas. What so happens they ban players for longer time to make them want to buy another account at the lower sale price to make money?
And while they say third party tools, that they have investigated your account is bs, in 6-7 months of investing 1000's of accounts is not enough time to investigate fully. So in which ban the puerile you previously did, just because they think they continued to after the fact for most did and the least stopped botting and was ban unfairly.