Lightroom. There are lots of alternatives for editing some even FOSS but I haven’t found any usable alternative to the library of Lightroom…
Yep. I refuse to update my OS because I’m still hanging on to my non-cloud version of Lightroom 5. No way I’d pay Adobe for like the 5 times I use it per year
Games.
Other than basic things like Tetris (Quadrapassel) and minesweeper, I’ve not yet found an open source game I’ve enjoyed nearly as much as the countless proprietary games I own and play.
OpenTTD is the best in its genre if you like that sort of thing… Though it is a reimplementation of originally proprietary software.
MacOSf or the trackpad gesture support.
DaVinci Resolve is much better than any open source NLE. Generally, most closed source media production software is better than their open source counterparts except Blender. Blender is incredible and it gives me hope that other open source software can be just as successful in the media industry.
Discord over Matrix. The range of features plus the style of the client. I like soundboard and emotes. its easy to setup a server and invite people.