It's a matter of thresholds and quantities. The business doesn't need everybody to consent to its existence. It just needs to raise enough money to continue existing. And it only needs to continue existing long enough to gobble up the competition so the choice can't be made between them and an alternative retailer the choice must be instead made between getting the thing from them or not getting the thing.

Plenty of us can opt out of patronizing these institutions but that doesn't Force change. That's what government is for.

We aren't going to be able to vote with our wallets hard enough to change business practices that are abusive and toxic. We're going to need the government to do that. That's a substantial part of its job.