I've worked at more than one job where I was told it was OK to use MIT, or Apacje-2.0 licensed things, but to not touch any GPL or AGPL software.
So, even though there wasn't any non-commercial clause in the license, it's copyleft nature led to that effect at those businesses.
In general, I like the balance that the GPL & AGPL strike - commercial use is allowed, but the company has to give back. The "condom code" thing that you mentioned is certainly less than ideal. I would prefer that businesses open up their full codebase. But, I think the more likely scenario is that they just don't use any open source at all (or they use it and violate the license!) I'd prefer condom code over either of those possibilities.
A couple of questions:
As others have said, https://www.logicalincrements.com/ and https://pcpartpicker.com/ are both great sites for helping you pick out what parts to get. I also wanted to mention that logical increments has guides for screens, keyboards, mice, etc.