I'm afraid that all feels very subjective to me, Microsoft were providing online services before Google even existed as a company, so I'm not sure how Google could have more operational experience of online services.
You obviously feel that Google's services are more advanced than Microsoft's and Amazon's but from a market share perspective they're clearly running third to those two.
What does marketshare have to do with how advanced the tech is or the lineage of their architecture? Especially marketshare of just their public clouds?
All 3 majors have great tech but Google has been doing much more advanced stuff which can be seen directly in their products. Everything in GCP is seamless from scaling without warm-ups, per-minute billing, automatic discounts, custom vm shapes, live migration, truly global load balancing, etc... and that's just in their compute engine product.
You obviously feel that Google's services are more advanced than Microsoft's and Amazon's but from a market share perspective they're clearly running third to those two.