This is the biggest threat to Telco since they've paid billions in Spectrum. The sites that earn the most will be converted to 5G however CBRS has limitations but it's not bad.
CBRS has it's limitation and isn't permanent. Gov can take it back anytime and then there is also a priority. CBRS is good for smaller installation but not able to take commercial traffic. Caveat here is that 5G is difficult to deploy. You need a lot of antennas which cost $$.
So in areas with higher density, there'll be smaller telcos that'll start operating.