So, in some cases, you're advocating just closing up shop?
If your website costs so much that you need income to support it and provides so little value that people are unwilling to pay for those costs, then, yes, you should probably shut it down.
You do realize that both YouTube and Google make their money entirely off of ads, right? If you had your way, we wouldn't have the largest search engine on the internet nor any of their spawned products.