He gave the Obsidian example, which is a great one, so no. Obsidian shows you can still do well as a noted app company if you are selling the right thing (sync).
This isn't trivial when you start syncing mobile (now you need an extra app, as onedrive doesn't support local), or onto a work device (where I don't want onedrive installed)
There's work arounds (for example I forgot the name, but one plugin allows you to setup onedrive to share just one folder via logging in on each device), but the syncing story wasn't great. Quite a bit of extra setup across all devices, more points of failure etc.
Hence the smart business model, of let us handle it for you for a small cost.
There's an Obisidian plugin for direct syncing to OneDrive that works on both mobile and desktop - this keeps you from having to deal with either triggered syncs through github or the various other, painful syncing processes.
