Will Dremio kill ETL/ELT?

I’m not seeing any point of data lake anymore if we can just query directly from the source. If dremio make it’s so efficient to do interactive query.

Basically we need data warehouse because of it will be structured in the proper way from reader perspective and not to have an impact to the core system.

So if i were to start again ? do i still need data lake or data warehouse ? I’m always try to find more efficient way of doing something.

Thought ?

Cheers