Great work. These big guys are no dummies that’s for sure. Think of all of the cool things Google gives everyone “for free”. Unlike many “free” things that are worth about what you paid, they make it really good and useful. You get hooked. Then after for a while, what was free now comes with a price. A similar thing just happened with Google site search, I had to scramble to find a new solution for a web site after the price suddenly skyrocketed. I’m just glad there are so many great people out there working on viable options, including open source. Problem is many people won’t want to expend the effort to make the change like you did, they’ll just stick with what works and pay the price.
Amazon will play this game as well. After they take care of the last dregs of their competition, the low prices and free shipping will suddenly disappear.