Software isn't a brick though, it is changing and updating and is a brick that has to be maintained. When you put software bricks together you get a construction that is more powerful than the sum of its parts. It is something inherently valuable in and of itself.
If I need 1000 software bricks I need for my house, you can’t really convince me to pay a premium for each. Especially since I often have alternative bricks.
Psychology plays an important part in how markets work.
In the UK the cost of building materials has been soaring over the last couple of years.
Due to some sort of scarcity, I assume. Software seems to become less scarce as time goes by.
I think a lot of capacity disappeared after the financial crisis and demand has shot up in the last couple of years due to relaxation of the planning laws.
No - building materials in the UK have gone up in price because house prices have gone up and interest rates are low. It's easy to borrow money and the ROI on building is high, so the merchants can charge more for their goods without making a significant dent in the buyers budget.