Fewer professional communities have embraced open sharing on the web the way tradespeople have, the amount of home improvement and maintenance stuff you can learn online for free is wild.
I wonder if this could be down to the use of scraping and AI to harvest information deters people in other trades and professions from sharing material.
If I wrote an article on a legal topic in the UK then that topic surely would need to be based on UK laws and there for applicable to the UK Only. Would only be applicable in the UK, if an AI was to harvest that, would it be able to apply my work to the UK only for example.
Legal advice can change quickly esp when it comes to taxation after a budget.
We already have problems finding upto date information on some topics, try searching for a ubntu help topic and you sometimes end up with a mass of links to outdated information.
In terms of DIY, a lot of that are skills that can be applied anywhere, how to paint a wall, well get chose colour, get paint, get paint brush and other items, and paint the wall.
So if you write an article on that anyone in the world can follow it.
