I agree with the people above me, there are a few reasons there are no 128-tick servers. At this point, they don't have the time to make any changes to CS:GO, and at this point, CS:S2 is what we should be looking at, and hopefully 128-tick will become a standard for servers whenever that comes out. 128-tick servers are just harder to maintain and difficult to switch to, and remember all third-party sites always have 128-tick (PvPro, Faceit, and ESEA)