Overpriced complaints always sets off alarm bells to me if it solves some real problem/people like it/etc. There are usually migration costs and "way overpriced" may still be a small slice of overall budgets.
True. For some companies that price is not enough to move the needle. For some companies it will be. Calendly is worth 4B at this time. If I could move 1% of their customers then that's worth it for me. Executing this won't be easy by there are way more than 1% of the people who will move to save cost.