“The FCC intends to make the internet much more expensive to use. Look for users to be “certified” eventually.”
You mean like Ham Radio today?
That would be the precedent.
While you have to be licensed to use the airwaves, that wouldn't stop anyone from picking up the hardware and broadcasting or otherwise using the airwaves for their own communication purposes. There's a risk of being fined if you're caught, but there are no requirements for licensing to purchase or use the hardware.
The same will go for routers and switches. A black market for legacy hardware will open up, and "gray hat" hackers will figure out how to compromise the new firmware. It's been going that way for decades. Aside from the bald-faced attack on our liberty by an unelected bureaucracy, this is much ado about nothing.