Completely agree with you there, I think it's especially true for an often overlooked yet massive subset of the businesses : the smaller players.

They tend to have neither the resources nor knowledge that there's a world out there beyond the regular free to use but you pay with everybody's data and consolidate their power big corp (FB, Google, ...)

I think the way forward would be something akin to CloudFormation with presets on your own server (DO / Scaleway / AWS / ...), something managed over which you still have ownership and can plug off. My axis is particularly around marketing but I suppose you could expand.

PS : I would add Redash to the list of BI tools.