I think the value of the platform lies in the fact that the time you spend in implementing a lot of the features needed for a large traffic/heavy load applicati

I think the value of the platform lies in the fact that the time you spend in implementing a lot of the features needed for a large traffic/heavy load application (caching, load balancing, replication, storage, queries) is mostly saved by the framework and by Google infrastructure. This time then can be spent in the actual product, which for a startup I believe it´s a good thing, since providing a good service is something expected by a potential user, but it´s not really going to sell your product.