To provide a short response:
- It is known and has been extensively discussed.
- They, along with probably many others, are in violation of the GPL v3.
- We do not intend to openly discuss this or name them, as it would provide free marketing and “Search Engine Optimization”.
- The team’s general position is outlined here: Importance of Open Source in 3D Printing and the Consequences of OSS License Infringement
- Given their behavior, it is likely that only legal action will bring about change. This is complex, tedious, and expensive, and may ultimately be futile.
- Users and buyers of such products have the most power:
- Stay informed.
- Politely but assertively highlight their shortcomings in direct contact.
- Ultimately, avoid purchasing these products.