That is absolutely true for particle physics, yah. The harder and harder to find particles have shorter and shorter lifespans and need higher and higher energy interactions to be detectable. Hence we keep building larger and larger colliders. There are already plans in the works for bigger colliders in both China and Europe. LHC is awesome, but we already need a bigger one. 
Get a few beers into a physicist and they’ll tell you that LHC was more or less built just to detect Higgs. That’s how important confirming that particle was to the field. Now, of course, LHC will do many great things in research, as have all the older and smaller colliders. But the real frontier is at the high energy end.
I would liken it to telescopes. We keep having to build bigger ones to see deeper into space. Colliders are the telescopes of particle physics. To see deeper and deeper into the fabric of the universe we need bigger and bigger colliders.
