With the knowledge and technology of today there is arguably very little direct economic value to be had from this part of particle physics. One cannot preclude potential future implications though (it has happened many times in the past that understanding phenomena that were far removed from everyday experience created later the conditions for massive technological breakthroughs).

Particle physicists and other researchers in fundamental science are also typically keen to point out at indirect effects. E.g., building the massive accelerators to detect particles pushes forward more conventional technologies. The Web was famously invented to serve CERN collaboration needs.