And usually at the end of a public infrastructure project you have something of some benefit to the public, even if there's bad RoI. With tech stuff that goes nowhere at best you have a jobs programme and short-term PR for some politicians.

The fervent wish to only let deserving people get grants results in a huge amount of box-ticking and self-promotion that (in my experience) seems to select for self-promotion parasites rather than people who want to make useful products and get rich from customers rather than government funds.