I don't understand why anyone trusts anyone. If you build your business on anyone else's back, then you have to be ready for them to disappear at any time.

That being said, if the choice is between building on Google or JonathansAwesomeSoftwareCompany, then I'm picking Google every day of the week. Google may kill the project, but they are infinitely more likely to remain solvent and be able to throw resources at what I care about than Jonathan is.