Actually no, because contracts are enforceable as long as they don't go against the law, there's a limitation for a contract and contracts cannot be penally prosecuted
well, certainly a customer that feels screwed will hate to bring you money, so even if you can force someone to get customer support from you will hate you, and eventually when they can get out, they will, no company is exempted from this reality, people like to feel companies care about them and their product or service makes their lifes easier, else they fly away, but i think those who push this shitty ideas are more likely directives born in rich environments, they don't understand the customer and try to optimize to cut corners instead of trying to be relevant on the market, or shall we say, they rest on their laurels