25 FTEs is an incredible achievement, and you should be very proud. The rewards are enormous - VideoLAN has a massive impact on human culture, more so than 99% of all businesses. Taking on VC to "grow" may be difficult, but is it something you really need to do? What you've built is amazing, and if you can sustain it at its current size, you'd be doing wonderful work. Endlessly chasing growth is a fool's errand, and you'll probably end up making compromises you never wanted to in order to get there.

I think one piece of wisdom I'd share about sustainable FOSS for this thread is: be happy with a smaller size. A FOSS business is probably not going to be a unicorn, but hey, that's okay, isn't it? If you're building software you and your users love, and you're putting food on your table, then you've got something to be proud of.