This is easier said and done, but there are huge, closed vertical platform stacks appearing, and those same vendors are making it really hard or forbidding it to get "portable" apps (in the widest sense of the word) working on their platforms.
You can make your house outside these stacks, but your business isn't going to run far without any passerby's.
You can make your house outside these stacks, but your business isn't going to run far without any passerby's.