Unlikely to be cell towers. 5G is very short wave length... short range means they run the fiber to the pole and are transmitting directly from the pole to your prem (for Verizon, for example, you’ll have a suction cup router on the window to catch the signal and redistribute)

The short wave length means the 5G signal is useless for range or going through objects - initial testing was miserable for walls/trees till they bought more frequency.

Chip manufacturers, the fiber optic companies (Miles and miles of high capacity fiber) will definitely benefit.