Doesn't that mean spending on Google is profitable? You can simply set a bid limit at less than your customer lifetime value (multiplied by conversion rate) on

Doesn't that mean spending on Google is profitable? You can simply set a bid limit at less than your customer lifetime value (multiplied by conversion rate) on all channels. If someone outbids you systematically, then your spend in that channel drops to zero. Who cares whether it's Google or anyone else. The right move is to spend on all profitable channels, and if you run out of money, borrow more. Why pass up profit when capital is so cheap?