He also said/reminded the host that the old theory of needing to be 4 National carriers for competition isn't necessarily true anymore, when speaking that there are 2 large carries and 2 small,... possibly 1 failing in the future.... He acknowledged that will also play a part in determining the outcome.
I think T-Mobile has a point with 5G on 600Mhz which is expect to double its relatively slow speeds. Sprint is expected a 5 fold increase in Band 41, however I personally think the real difference will be in upload speeds given 100Mhz will be available for upload as compared to today's typical 20Mhz that most Sprint customer observe. T-Mobile's plan given merger approval is to use the spectrum to shift customers around while it upgrades each band to 5NR starting with Band 41 (doing this on a market by market basis). This is according to publicly available plans and comments. Since those were released the plans have been revised.
My guess is the FCC is pushing T-Mobile - Sprint towards a Shentel - nTelos type of deal where coverage must remain the same, customers must end up with a phone in some fashion that fully supports the new network, some divesting of spectrum, and they must report back to the FCC on progress towards these goals. The only area that is really new is the MVNO possible conditions. To placate possible opposition and appeal to FCC stated goals, wireless internet is thrown in, at least for rural areas, which is also a shot across the bow for cable companies getting into wireless. Doing 5G earlier would allow the new T-Mobile a longer time frame to depreciate these assets. It is also expected that new "must have" applications will be developed as a result of the increased speeds.