1. It might route too many people to where the network is fast, thus making the network not fast anymore and wasting a lot of people's time as they "go."
2. It might also route a bunch of "digital nomads" to my local art café where they will hog the tables, like Waze did with commuter traffic to my residential street.
How do you avoid those two problems? Or at least the first one, which is a problem for your target users?
As for #1, there are physical capacity limits you are likely to first exhaust. Only so many people will fit.
For #1, if you have ten people all on Zoom meetings at the same time, isn't that going to kill your fast-for-a-café bandwidth?
They need to replace some filters and other pieces so that more frequencies can be allocated to upload.
Not unless they all start at the same time. If they start a little staggered from each other, there will be time to boot the first person out for trying to do a video call in a cafe around other humans before the next one starts.
Working in a cafe is completely reasonable, and wouldn't disturb other people. Taking a call is ridiculous.
W.r.t 2nd, Yep!