Why do you think less votes would be bought? Im inclined to think the exact opposite since after the 50/50 split and the price adjustment the demand for votes would increase since for a 110$ vote you would no longer have to pay 100 USD but rather something like 70-80USD.
Getting higher up the trending page would be cheaper.
I know bots would suffer but Smartsteem and Minnowbooster vote selling services i dont think would. They work quite differently then bots.