$38,000 seemed like a bit much, but that works out to $31.66 a month. Still more than a typical hosting plan, but I guess the assumption is that hosting won’t be so cheap in 50 years.
In any case, I’d expect to be able to host a bunch of century Wordpress sites for very very cheaply, provided you locked down plugin installation. Without plugins they’re a known security and upgrade profile, and I expect traffic on 99.95% of them to be effectively nil or highly cacheable.
To that end the price feels a bit outlandish to me.
Wordpress is asking you to make a one-time payment of $38k NOW. Not in the future.
Inflation means $38k right now is worth a lot more than it will be worth in the future.
So I don't understand how you came to the conclusion that the plan is cheaper after taking inflation into account.
Today, maybe. For the human costs of hosting support in 2123, given the cost of inflation, it might not be, and these plans include technical support.
(Although you could also that the technical support work on most of these 100-year plans should be dropping over time too - especially if the human being involved passes away. You could even argue that AI might be doing the technical support in 2123.)