....
Two servers with 64GB RAM each and a few TB of storage can easily run a thousand full BTC nodes. This isn't a big expense, you can buy this stuff for peanuts on ebay...
We need to test that this is a valid option. If it is, then Bitcoin has no problems.
But, Bitcoin does have problems. So it can't be that easy, or cost efficient. Bandwidth costs alone would make it expensive to set-up and maintain.