"meh, we're upgrading the 4% who didn't choose that way" isn't going to work if a ton of people 'hope' for it. "30% of people chose the lower option, so there's still demand".
If you get grumpy because you try to game the system and fail, it's your own fault.
Sure, but people still get grumpy when they aren't at fault. And they irrationally blame the other party for it. It doesn't matter if it's their fault if they're your customers.
If you get grumpy because you try to game the system and fail, it's your own fault.