There are a lot of small companies / single devs working in very technical, pro-oriented, industries. They still thrive in the days of browsers and javascripts and what not, writing super optimised, super inovative, native code.
Like all the 'audio plugins' people that essentially write .so's that go into the big desktop audio workstations, doing anything and everything with sound, while also experimenting with various UI/UX paradigms, unrestricted by what's possible in the DOM/CSS, integrating hardware into it all etc. (I imagine similar in the video/rendering industry, but I'm not too familiar with that side)
Like all the 'audio plugins' people that essentially write .so's that go into the big desktop audio workstations, doing anything and everything with sound, while also experimenting with various UI/UX paradigms, unrestricted by what's possible in the DOM/CSS, integrating hardware into it all etc. (I imagine similar in the video/rendering industry, but I'm not too familiar with that side)