Tip of the iceberg. Most credit and debit card transactions, even at brick and mortar stores, would cease. Most ATMs would cease to operate. I don't have any specific expertise, but I believe most bank traffic has switched from expensive and slow point-to-point networks to VPN over the Internet. Shutting down the Internet would shut down the majority of economic activity in the US and, indirectly, the world.
Stocks would plummet.
Stock exchanges would close, all trading would cease, and all shares would be effectively worthless for the duration.
You're underestimating the impact. Shutting down the Internet in toto, even if it's technologically feasible, which I doubt, would make the worst predictions for Y2K look like a Junior League cotillion.
” if it’s technologically feasible, which I doubt”
The very idea of the internet was to route communications around large areas due to outages from nuclear war or natural disasters.
There’s is no way they could shut down the internet.....they could slow it down for a awhile until the people start setting up their own pirate internet.
They’d have to kill every private cell tower, private sattelites, major routing hubs etc. It just could not be done without crippling the governments ability to function.