Yeah, just be careful never to respond to your work emails whilst using this keyboard. "Sorry boss, I can't be bothered right now because my keyboard prohibits me from using it for commercial activity." That will fly well.
That's pretty clearly not what they mean, and I'm sure you know it. You pretty clearly mean using the software as in taking the code and repurposing it or modifying it, not using the software products itself.
No I did not, and I have no desire to play the guessing game when it comes to these things. There are lots of FOSS alternatives with no strings attached, or honest commercial projects which don't claim to be something they're not.