Why should any company be forced to support a sale they've already made? Unless they are beholden to a warranty promise, a return policy, or it was promised at

Why should any company be forced to support a sale they've already made? Unless they are beholden to a warranty promise, a return policy, or it was promised at the time of purchase that support would be available for some amount of time, I don't follow this thought process at all. This actually sounds like a way to run a company/industry into the ground, or make the original products prohibitively expensive - to account for the cost. >If you can't handle a support call, don't take my money. Was there a promise of support at the time of purchase? If so, then yeah, that's a problem worth caring about. If not, then why give them money?