In a world where HTTPS was the exception, I could see a use for this sort of service. Now not-HTTPS is the exception, not so much.

Privacy from your ISP? Okay, but I've replaced that problem with privacy from my VPN provider. Is that a better problem? Is my VPN provider going to exploit me less than my ISP would have?

Geographic restrictions? That's a genuine benefit. Alas, it would end up as a bit of an arms race as websites that really don't want me to visit would start blocking VPN providers.