There are lots of cases where AWS builds services that are not revolutionary but purely evolutionary. Consider Amazon Redshift, their data warehouse. You would _think_ Redshift, with its poor elasticity and tight coupling of compute and storage would suck compared to BigQuery, which is a truly new way of doing things. However, the combination of "it's just Postgres(-ish)" and rapid feature iteration make it a pretty good system to use. Most importantly, the cost model is very good. TL;DR it really depends on the service.