We have a better remote terminal client today than anything X ever achieved: the web browser. It's not as good as a local display for resource intensive stuff,

We have a better remote terminal client today than anything X ever achieved: the web browser. It's not as good as a local display for resource intensive stuff, e.g. games, but X never was either (it was abysmal, in fact). It's a hard problem, but given that price/performance of computational power has mostly run ahead of network speed for most of computing history, and latency is a (mostly) insoluble problem for long distance networking, Web Assembly is often a better solution for pushing even resource intensive applications out to the edges.