The issue with FreeCAD is that all the workarounds (so far) are manual. Other apps may well be doing similar things, but they’re doing them behind the scenes and the user doesn’t have to (for instance) specifically set up a datum plane offset at the exact same distance as the face you want to sketch on and either manage it by hand or use an integrated spreadsheet to set up and reference variables.
I like what I see coming out of FreeCAD these days, but stuff like that is… umm, a lot.
The sense I get is that it is more lazy than anything. The verbiage feels like the fact that designs were public documents was tacked on last minute to satisfy some desire for market segmentation or to create a parts and design library to draw traffic. It would make sense that the company hosting the software would not want the headache of being unable to use your stuff commercially or even of parsing what they could use, since in some sense they always are using everything commercially. Refusing the to thread the needle with their verbiage, though, has left a situation where the Terms of Use say clearly that (1) a design is Content, (2) a free user’s Content is a public document, (3) a free user cannot use their own public documents for commercial use, and (3) a free user grants EVERY OTHER USER a license to sell their public documents.
The only possible wrinkle is that the ToU distinguish between a “Customer” and an “End User,” so maybe you the customer can grant you the End User the same commercial rights that Joe the slightly shady CNC machinist in Peoria has when he downloads your widget to fabricate and sell. Something tells me that PTC’s license compliance folks don’t interpret things that way, though.