Now we're getting somewhere. This is a great example because obviously speed depends on the context.

Obviously a shovel is quite an improvement for home gardeners but big constructions need a completely different tool.

For +99% of TS projects going from eg 10ms to 1ms is not going to make any difference even though it's a 10x improvement. In part because most monitors refresh at 60hz (16ms per frame) but even with +120hz monitors this is not going to have an impact on any workflow. Even for CI network latency is going to be a much bigger factor than improving TS compilation beyond the performance that TSGO already provides.

I think it might have more meaningful impact on high volume use cases, i.e. where cumulative run time is still significant.

That’s already meaningful for at least a couple of companies I’ve seen investing in these ports. It might be niche for individual dev workflows now, but as those evolve it could become less niche (albeit probably still less uniform).