While we need to earn money, our focus is on only doing projects where we can be proud of engineering-wise. If we don't have a chance to become the best in something, we won't even start.
Me and my company also try to not out-source anything, but to do everything ourselves, as learning new stuff is fun.
Personally I love Object Pascal and assembler (yes, I am that old), and am the opposite of a "full stack" "developer". Written my own TCP/IP stack and webserver with a total binary size of 1MB and zero dependencies (besides a Linux kernel).
I am also part of the international "demoscene" community, a UNESCO-recognized art form that starting in the 80ies had the focus to get stuff done with computers that nobody believed would be possible to do. I've organized the world biggest demoscene event for a decade, and still am very active.
Also, I pretend to be a DJ, doing wild mashups mostly related to UK Hardcore (once called "Happy Hardcore"). And I have train drivers license. Why? Because it was fun to learn.