.and they are disposable. Most startups I see I know won't be around in 2 years. they won't be around not because of the external services they've used but bec

.and they are disposable. Most startups I see I know won't be around in 2 years. they won't be around not because of the external services they've used but because they wont find the right business model. It's like saying that every ecommerce around will fail because they're using and external payment processor like Paypal. Maybe some of them can fail because of a Paypal "horror story" (account blocked etc..) but most of them will fail because they are not profitable. I partially agree with you that relying on external services could be a risk, but in this case they've chosen services for some part that are not so easy to implement internally, and for that they've picked two new but highly growing services.