Is the problem with starting free that you get people used to the idea that this is not a service you pay for? Freemium (get a small service for free, pay for

Is the problem with starting free that you get people used to the idea that this is not a service you pay for? Freemium (get a small service for free, pay for a better one) is one thing but this is "this used to be free, now it's not". At the very least that jars. I think the real issue is that the likes of ChromeSync make the longevity of this business model very questionable. Joel Spolsky once described this sort of thing as grabbing nickels from the path of an on-coming steamroller - you're making money out of something that the product should or will inevitably do as a standard feature. Yes there is money there for a while but inevitably the steamroller is going to flatten you.