+1. Even if there is perfect trust with a platform vendor, that doesn't mean they won't come under new management tomorrow that rewrites the rules. That's a sca

+1. Even if there is perfect trust with a platform vendor, that doesn't mean they won't come under new management tomorrow that rewrites the rules. That's a scary proposition for the backbone of one's business, since porting to a new platform is almost as much work as writing it in the first place. I can't say I never use closed libraries/platforms/APIs, but when possible, I always choose the option that has a community fork, or some other escape route.