IMHO, we can thank that no-code licence that restricts you to
commercially-made equipment for this.

How does the no-code license restrict you to commercial gear? I see nothing in
the rules that says this. After an absence from Amateur Radio of 38 years, I
bagged a no-code Tech at a hamfest in 1998 and proceeded to build myself a 2m
rig from a TenTec kit. Did I break the law? I don't think so. I have since
re-obtained my General but passing the code again didn't make me technically
smarter.

KB9TMY (Formerly K6HWY)