I don't think it's that simple. Here in Russia despite attempts at revitalization many national minority languages are sorta dying. Once everyone around you speaks a "universal language" (Russian), which due to its "universality" becomes a language the wast majority of the culture is produced in, other languages naturally start getting phased out, despite attempts to preserve them.

Like I knew Buryatians who couldn't speak Buryatian despite studying it at school. There's no motivation to learn. Everyone speaks Russian.