Thing is, software isn't the issue when building a business - Dropbox being a great example because even now people are like "but that's just rsync-as-a-service". Software and making a business out of it are two different things.
Syncthing doesn't have a well-designed UX. It does what it does, but it's just a bunch of independent shares, and you have to worry about P2P and etc.
I tried it for a while but eventually left it behind because it's just not particularly helpful. You practically have to draw the rest of the owl before it can work well, and at that point you can use any circle.
Sure, if GPT5 says "LGTM." Again, only half-kidding. Access to the source covers a multitude of sins, both real and potential. Control of the source covers the rest.
Right now I sort of trust Dropbox, but considering how much enshittification it has already undergone relative to its original mission statement, the company could do any number of things to lose that trust in a hurry. Someday they will, probably, and I won't be able to do anything about it except complain...
... except that's no longer true. Which is awesome.
Guess how 90% of the code today is done in F500? Offshored to the lowest bidders in India/elsewhere.
I trust more what claude is spouting than any code from https://en.wikipedia.org/wiki/Big_Tech_(India)
And I bet I could build within 5 working day a Saas replacement of Domo.
There is no moat anymore.