A while ago my team needed exactly this kind of auth solution, so the eng team reached out to Ory to clarify some technical questions that weren't covered by the docs. We were super enthusiastic about Ory. It looked solid, was open-source, and ticked all the right boxes.

We got an immediate response by a very motivated sales person who insisted to be connected with management and refused to put us in touch with anybody technical. It was a pretty off-putting experience, because it basically presumed that our eng team wasn't the decision maker (it was). I know a lot of companies throw their sales people at you, wanting to get in touch with somebody higher in the org chart, but it's still a pretty insulting experience for a tech-driven organization.

Needless to say we went with something else (not Auth0 either) and have been very happy.