This is a reasonable point, _but_ how much data do games need to load versus a website. Using Twitter as an example, when I open it I can see 4 tweets. Assuming each tweet is 1MB (for easy math), I have a 500Mb WiFi connection, I should be be able to do 100 tweets in under a second. Meanwhile most/many games are pulling in gigabytes of data in textures and audio data. Spiderman on PS5 is under 15 seconds from the home screen to being in game, playing which is about how long it takes for the Facebook mobile website to load.

Comparing latency and throughput of local and remote assets says nothing.

Your comparing gigabytes of data to a few MB. Now that hardly seems fair.