Maybe I'm missing something, but what I need (and what the data team at my company spectacularly fails to deliver) is fast access to post-ETL data as well as pre-ETL data. I need the raw data sometimes, I need the processed data sometimes. What I get instead is no access to the raw data, and broken/slow/uninsured access to the processed data. I don't know about other people but in general I think a decent data warehouse would make me happy and the aspiration to be a datalake is what causes the data team to make me unhappy - they fail to provide the basics because they've heard too many buzzwords.