And that is the problem with 20 year (30 year?) product lifecycles. A lot can change in 20 years. For example the ability to service it might now be feasible. B

And that is the problem with 20 year (30 year?) product lifecycles. A lot can change in 20 years. For example the ability to service it might now be feasible. But since it’s almost entirely built, good luck making it serviceable!