If you build it, they won’t necessarily come.
These are gov junkie fashion of the day. To day High Speed Rail, yesterday, modern public housing projects.
The important thing is that a few groups have their wants satisfied.
Do Gooder Dreamers/Socialist get to play, and feel important.
Politicians get credit, before the bills come in.
Contractors get rich.
Unions get wages.
Some are found to utilize the boondoggle, and in the case of trains or pubic housing are near nigh paid to use it.
The what, and why, and perpetual costs are just details.