This has been transformative for the project[0] I'm working on where I need to host a lot of ocean environment data using vector tiles. I've been able to build out a data upload and tiling pipeline similar to Felt using tippecanoe + pmtiles without a lot of trouble. It's so cheap to run and host we intend to provide a data hosting service free to our users with a reasonable soft limits. Using something like MapBox Tiling Service would have been a couple orders of magnitude more expensive and make the project infeasible. Really exciting stuff.

[0]: https://seasketch.org