Many do, yes. For those that don't – the majority – I'm curious if pessimism finds their actions as distasteful as he found Flexibits', the authors of Fantastical.
Personally, I find nothing wrong with their actions. pessimism was never purposefully mislead about how Fantastical was being sold, and it's perfectly reasonable for Flexibits to charge the same price in both venues even though they have larger margins in one.