The future is not uniform.

Certain things will be cloud-based or otherwise provider-hosted. Some things will remain self-hosted, for those who prefer it.

It's like owning a car: you take the trouble to maintain it, but it's yours and will take you where you want, without the limitations of a taxi or even a rented car. I live in NYC and don't own a car, for I have too little use for it. OTOH if I were a plumbing contractor, I most definitely would own a car, or maybe a light truck. One size does not exactly fit all.