There will always be people like me who prefer buds to concentrates. Concentrates ups my already too high tolerance. Concentrates make me cough and give me bad mucus. (IWE, CO2, BHO... it ALL does it to me) Smoking buds is far far easier on my lungs than smoking or vaping concentrates. Concentrates cannot deliver the full flavor or aroma that buds can. And in general I find that there is little difference in the high from one concentrate to another. Something gets lost in the extraction process. Whatever it is, with as much concentrate as I want at my disposal, I still choose buds almost every time. Add to that the social experience of smoking buds (longer, drawn out) as opposed to smoking concentrates (quick, less social) and buds win again. In addition, concentrates are cool right now. Much of it is a fad I think. Especially with younger people, under 25. They love new things or different things than their parents had, such as LED lighting, or concentrates.
Concentrates are nice, but they do not offer the full experience that smoking buds does. I don't see buds ever going away. It will never be "game over" for buds. Hell, it's not like concentrates are new. Hash and kief have been around for a thousand years. At least! We've been making BHO since at least the 80's. And all this time buds haven't gone away.
Saying that concentrates will eliminate buds is like saying no one will drink wine anymore because we now have brandy.