Very true indeed, my partner and I are building an extension, she spent over 70 hours on the planning drawings and about an extra 100 hours on drawing details for the builder. In the end, the builder does not even read them, we have had to make him take down an entire wall because he missed the bridging detail.
I have spent about 200 hours on sourcing materials, calling manufacturers etc (not including reading this forum) because in order to build within our budget, we agreed a labour only deal with the builder. We hired a structural engineer which I initially complained was too expensive, after all his input, i think his industry are just not charging enough!
Pretty much everyone around me is an Architect (except me), not a single one of them is profitable, in my opinion, they spend 2-3x more time on projects than they bill the client, same goes for structural engineers.
I have come to the conclusion that no other profession (lawyers, doctors, bankers, accountants) would do this.
For a bit of fun, I would love all members to bill every hour spent on their project from inception to completion at the per hour earnings of your day job (if retired, then earning just before retiring) and add it to the project, you may find your time to be worth a lot in monetary terms.
Not to mention, by the very reason you are on this forum means you have gained so much knowledge and advanced insight of how buildings work. I doubt a builder, after spending all day on site grafting would not have the time or energy to go home and spend another 3-4 hours researching new products, bridging details and ideas.
On my project, i have found good ideas have come from the everyone all the way down to the labours.