Interesting question - Flarm is a single code base by a single developer. Glider displays are multiple code bases by multiple developers who don't all support the same contest rules, which vary by country and contest format. Also, position reporting technologies are available on multiple, non-glider platforms (including iOS and Android) made by companies that don't care about gliding at all, and the implementations of ADS-B vary by country (eg UAT and ADS-R providing TIS-B traffic - including transponders - as well as weather radar - a different but similar topic).

This yields two issues: 1) who is going to corral all the developers and make them comply? 2) how do we want to allocate the very limited programmer capacity for developing soaring computers and displays for the coming decades.

9B