Because is not compatible with anything and for the longest time were no digital parts and no support from 3rd party vendors... local rep is a PIA to deal with. Thank God it didn't gain popularity up here
Update:. Got in touch with Thommen, very helpful actually. They offer digital analogs and regular stone model analogs. Only two places mill custom titanium abutments for them...roe dental lab and core3d. Also, you must have one of there drivers for the screw. Haven't seen cost but I'll let ya all know.
I just ran into the same issue. Thommen now only recommends ROE to fabricate their custom abutments. If you have your own scan body that the docs uses then you can do everything but if the doc uses the Thommen scan body, as most others said previously, it's not capable with anything.