Most of these apps listed above are not CRUD apps. The service based ones have significant and non-trivial data processing on the backend, lots of machine-learning, or algorithmic data processing.
Google apps have been getting better over the years, but Google updates them almost continuously and incrementally because they are web based, and so most of the changes go unnoticed like a frog slowly being boiled in water.
Is Google Search the same as it was 5 years ago? No, it has Google Instant, voice search, Knowledge Graph, direct answers, better spam filtering, it's index is far fresher, etc. For example, just the interactive chart knowledge panels (https://www.google.com/#fp=9a975e048e4bd6d6&q=population+of+...)
Google Maps has gotten radically better, and the latest beta maps is probably the most complex and sophisticated web application ever engineered.
Google search within G+ and Drive actually does object recognition with neural networks. (http://googleresearch.blogspot.com/2013/06/improving-photo-s...) This is a huge improvement in image search, and most people are totally unaware of it. It just works and they don't notice that it found it image without even needing descriptive text or tags.
Google apps are slowly getting smarter each and everyday but there's no "Jobsnote" to laud them, so the improvements are invisible.