> Most people do not do this, and many homes thus slowly degrade in value

I agree with the first part, people absolutely do shoddy work or none at all but the value doesn't seem to go down. My mother bought a house had it inspected beforehand but massive issues with the foundation and the roof showed up the following spring when there was heavy rain. Sure, all that can be fought with attorneys and insurance (both cost time and money) but it doesn't feel very good psychologically or physically to be dealing with so much paperwork and house repairs.

Sorry to rant, I think your comment is spot on... owning a house is expensive.