Surely you would think differently if you were working in a heavily regulated environment with hefty fines and even heftier publicity stakes. It would be crazy if these restrictions were not in place.

Nobody will care about your average web development shop working on the usual stuff. Why would they spend all the money and resources to track you?

Once you have worked in both environments you realize it's just not that big a deal. I do have my private laptop anyway, and I prefer to keep it separate from workplace stuff anyway - even when I was in the same position (working for a company who provided a laptop that I had full control over). It just seems healthy to me.