Like it or not, the Web is a two-way street, meaning that the server end of the transaction doesn't owe the client end anything in particular unless there's some relationship in place (like a payment). It appears the "just ignore it" matches the intent of most web users, though, since an overwhelming majority of web visitors accept a bunch of spammy ads + free 'content,' and a slim minority pay for ad-free alternatives.
So do car alarms.
I'm not convinced this is a business model I want to exist. We had an internet before it, and Google, and Facebook. I'm increasingly sad we can't return to it.
The law that caused the cookie banners also says companies cannot block access to the site if the cookies are not required for the functioning of the site.
Some German news sites have broken this and have "accept or pay" and I think this leaked to news sites in other countries. Facebook even tried it.
So, sure, if DNT is true, try to make people pay. Fine by me.