Then why haven't you left already? As someone who has done this years ago, I can only recommend it. The longer you stay, the harder it will be. And next time you want to start using a product, first ask yourself: Could they keep me prisoner if they went evil? Or would I be able to just export my data and leave?
As one example, at $work about a month ago I switched us from our $$$ Google maps implementation over to OSM + Mapquest Open. In some cases the geocoding isn't as good, but it's good enough for the important sites (AU based). And it won't cost us 5 figures a year anymore either.
