We need to add a caveat to apprenticeship mobility: as long as apprenticeship mobility goes to the highest standard, not to the lowest standard. That's critical.
You're right. Most people, when they think of the trades, think of a few specific trades—a carpenter, a plumber, an electrician—but there are 57 other trades. We're doing the best we can to expose young people to the variety of different trade opportunities that are out there.
The other thing is that not everyone is cut out to be a construction worker. It's bloody hard work. You have to get out of bed at six o'clock in the morning and be on the job site for seven o'clock. You work off the sweat of your brow. You have to use your brains, and you're working outside when it's -20°C and 30°C.