Where each platform started still shapes it
Vimeo began as a home for finished video and added live later, so its center of gravity is the library, the player and the collaboration around a cut. CastNest began with live distribution, so its center of gravity is ingest, simultaneous delivery to many platforms, and what happens to a broadcast the moment it ends. Neither origin is a flaw, but it predicts which everyday tasks feel direct and which feel like an add-on.