Network speeds are of sufficient bandwidth and latency to allow cloud first applications, which are vastly simpler to develop than Local-first whenever you need to add any remote/collaborative feature.

> Network speeds are of sufficient bandwidth and latency

They are, as long as you in reach of a base station.

As soon as you travel through a tunnel, hike outside, are on an airplane or are in Australia with latency to U.S or European servers things are different.

Not to mention choice of being offline, either to disable distraction or for reducing roaming costs for some devices while travelling.