[toast0]

Yes, but note that carriers will do all of the above. Use their licensed 'sub-6g' spectrum where traditional cell networks operate; make use of unlicensed spectrum for Passpoint Wi-Fi, use (licensed) mmWave spectrum.

Depending on the venue, they're likely to do a mix of whatever is most cost effective. But more spectrum, if usable by the handsets people actually have in their pockets is helpful.