The US response has so far been fairly muted, with a few notable local exceptions. There are a lot more people stuck at home in Europe.
In practice, though, at least in Ireland there's been little obvious problem, though you can definitely see an increase: https://www.inex.ie/ixp/statistics/ixp
Shelter in Place is basically just the Bay Area, right? And a lot of people still seem to be leaving the home for work there; notoriously, people are still making Teslas!
Also, California is mostly fairly urbanised and well-off. If Germany was the only place in Europe where people were being discouraged from leaving the home, this would be less of a concern. This is really targeting places, especially rural places, with poor infrastructure.
FCC is handing out extra radio spectrum as fast as it can. Took a bunch of white space channels gave them to TMobile. Letting some stay on 3.5ghz little longer before selling it off.
It's a neutral exchange. Note that it doesn't give the whole story; really big players like Netflix may have hardware directly in some of the ISPs and bypass the exchange completely.
In practice, though, at least in Ireland there's been little obvious problem, though you can definitely see an increase: https://www.inex.ie/ixp/statistics/ixp