It is far easier to comply to proprietary license than to libre/free licenses. The primary difference is (as someone had already put this elsewhere in the intertubes) that the supply chain is reversed.
In proprietary world if company A licenses something from company B then company A does nothing wrong and all the fault for what company B did falls on company B. This is because licenses say nothing about distribution (other than, say, per unit/volume price).
In libre/copyleft world this is reversed. If company A licenses/acquires something from company B and company B is a crappy/shady license violator _ALL_ of the legal problems fall on the large and complex company A. This is because our beloved copyleft licenses are distribution licenses.
In that case you must control all your suppliers (and in a typical large company that list seems infinite, often including a bag of tiny/small shops). What if a supplier goes out of business. Do you really think they have all the legal paperwork for each piece? In the world that chases time-to-market that is utterly impractical.
Hence, the less of this copyleft license 'risk' in your business the better for you. It's not about being evil, it's about covering your bases. Less exposure to potential legal issues == cheaper == better product.