Great point. Many of Airbyte's customers are doing just that - adding new sources to their warehouses - like Google Drive, Gong, and a ton of sources that weren't as interesting previously for data analytics. But this creates a ton of work for the data engineering teams - to not only load all that extra data, but to deal with rate limits and then to conform the schemas into a usable format after loading.
For now, I think its 100% appropriate to think of the Context Store complementing the Warehouse and not replacing it per se. We're evaluating future integration options between the new Context Store and the traditional data warehouse, but nothing we have publicly announced as of now. I think both approaches have their strengths and killer use cases.