2000 drives x $100 = $200,000. Double that for backup, $400,000. Admin, maintenance, let's say total, $1M/year. So, Wikipedia could end its own deadlink problem (IF the reference sources would agree.

But stuff goes missing at Wayback because people don't agree to their pages being backed-up. Copyright, whatever. So it's like Global Heating, the tech is there, but people just can't agree. So 'pirate' backer-uppers go to jail. And island-nations and expensive ocean-side properties are being submerged. So it goes.