Once they can get Google to only show "legit" websites, they can get down to the business of determining who is legit. I can see a future where you have to have a license to own a website and adhere to ever increasing list of government rules.
"Such a legal action would incur incredible costs for BOTH parties, and when found to be infringing would lead to financial penalties for the poster that would likely cripple them financially for the rest of their lives."
And that's an even bigger problem that needs to be fixed, but it is not fixed by the DMCA.
If the government is going to institute copyright, it's the government's responsibility to also institute a database that accurately tells what is actually covered under copyright and for exactly how long. Without that, the whole system doesn't work.