Overall, yes. More analysis is needed to figure out why exactly this happens, but overall, yes, a concentrated telecom industry that also controls infrastructure and potentially maybe also controls some information can create barriers to entry for others.
Evidence of meeting #22 for Industry, Science and Technology in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was windsor-essex.
A video is available from Parliament.