Physical limits can be worked around with tricks though. For example google had a feature where they prefetched and started loading a result as soon as you star

Physical limits can be worked around with tricks though. For example google had a feature where they prefetched and started loading a result as soon as you start moving your mouse towards it to click. Latency is still there but hidden from the user. Pretty excited to see what innovative tricks with predictive prefetching they came up with to base a whole company on it. I can also see this being useful for simply just files instead of apps. For example Dropbox on mobile also has a "thin client" approach but doesn't do anything smart to cache frequently accessed files unless you explicitly favorite them.