The vast majority of running instances of operating systems are Linux or BSD. I don't think proprietary software has dominated for 15-20 years. The two places

The vast majority of running instances of operating systems are Linux or BSD. I don't think proprietary software has dominated for 15-20 years. The two places it has won out thus far is in retail and SaaS. The environment of 1980 when most important software was locked behind proprietary licenses is quite far behind us.