I'd say my main take away is the value of having (or rather creating) your own unique sonic palette.
Yup. One train of thought that's always guided me a little is my "anti-Big-Fish" theory: If a style of music can be easily encapsulated / simulated in the context of a sample library of "construction kits" that you can buy for $99 on the Big Fish Audio website, then that's a style I should try to avoid. By revealing itself to be easily reverse-engineered, such a style is therefore no longer something I think of as all that innovative, interesting, or difficult to achieve. Plus every punter on earth will be churning out library tracks that sound 85% as good as the original source that was the inspiration for all those sample libraries. Not to say that I don't buy tons of cheap, derivative sample library content - but I generally throw about 90% of any library away after fishing through it all and keeping the six good drum hits and four loops that I might be able to mess with enough to fit them in with my other sounds.
When the retro-synth-wave craze hit a couple of years ago, with Stranger Things and Mr. Robot and all that, it took about three months before the sample library sites were absolutely awash in this type of content - pre-packaged and ready to rock. Same thing with "inception braams", "epic trailer drums", etc. etc. etc. ad infinitum. A lot of that content is quite well-produced and useable - drop some 16-bar loops into Ableton, overdub a few lines, and in an hour you've got a tense documentary score suitable for the Vice TV channel. But nobody is coming to me for that type of music, and it's not "morally satisfying" to me to use that kind of content anyway. So I'll buy that Boom Library "cinematic metals" library on special for $99 from VSTBuzz or whatever, just because with a name like "cinematic metals" there HAS to be something good in there, and then immediately load it up in AudioFinder, audition every one of the 4,000 wav files and delete them as I go. No backups, no second chances - just "spacebar, delete, spacebar, delete, spacebar, oooh I'll keep that one, spacebar, delete" all day long. Then 6gb of download becomes 100mb of stuff I might be able to use without being too embarrassed.
But I'm not really trying to be a factory that churns out oceans of content for every musical genre, applicable to the full spectrum of styles - I just enjoy the process of manually trying to shoe-horn a bunch of interesting sounds into something that resembles music. It's a bit of a happy accident that some of what I do is sort of applicable for a tiny niche of film and television productions.