Perhaps that's true for a startup still trying to prove their concept, but it might not for one that has achieved product/market fit. "Hybrid cloud" is starting to get traction for large enterprises adopting the cloud [1]. They're going from on-premise in their own data centers to colocating at internet exchange data centers, which act as on-ramps to the cloud oligopoly.

[1] https://www.bloomberg.com/news/articles/2019-12-03/amazon-tu...