Many others have said this elsewhere in this thread, but the cost of using all those things is not free. Every added service is an extra burden to maintain, all the way from writing code through to running and maintained in production.
Sometimes, the cost (both immediately and long term) of introducing a new component into your stack will exceed the cost of building and maintaining an inferior in-house solution, and sometimes it won't. Either way, the cost of these freely downloadable services is not just their cost to download.
Sometimes, the cost (both immediately and long term) of introducing a new component into your stack will exceed the cost of building and maintaining an inferior in-house solution, and sometimes it won't. Either way, the cost of these freely downloadable services is not just their cost to download.