Maybe. At least our company won't touch GPL code; as one colleague described to me, if you violate a proprietary license, a company will come after you for money, while violating a GPL license gets the EFF involved who will come after you for your source code.
I'm still wary, though. I could imagine if the resultant fines or source code releases from violating a GPL license weren't a strong enough deterrent, you could win by using a GPL-licensed product enough, then parry off attacks from EFF/FSF until you do a complete rewrite of the product underneath, then pay the fine/contribution to EFF/FSF while toppling the original company. If the company is big enough, and can afford enough good lawyers, there may be legal ways to get around laws.
I'm still wary, though. I could imagine if the resultant fines or source code releases from violating a GPL license weren't a strong enough deterrent, you could win by using a GPL-licensed product enough, then parry off attacks from EFF/FSF until you do a complete rewrite of the product underneath, then pay the fine/contribution to EFF/FSF while toppling the original company. If the company is big enough, and can afford enough good lawyers, there may be legal ways to get around laws.
https://news.ycombinator.com/item?id=7572332