TIS is free in the US, and was promoted, amongst other things, to incentivise pilots to take-up Mode S transponders.
Even if TIS were to be installed on a few radar heads here, it is difficult to see that it could be charged for on a pay-per-use basis, because of the nature of the technology.
TIS does display on certain other high-end EFIS style displays in addition to GARMIN. I am not aware of it displaying on Bendix/King GA hardware, but I am sure somebody can step in and correct me.