For example, permissive licences would allow big-EDA to "steal" the best open-source projects and to sell their programs without releasing the source.

Some popular permissive licences, moreover, don't contain any "patent clause" making them dangerous in the chip/hardware context: Tracking which IP went in which chip is relatively simple, and replacing a certain IP once a chip is fabricated is impossible. Without a "patent clause" developers could be easily threatened for patent infringement.