PTT over cellular radio - NOT amateur radio

With 446 radios at ridiculously low prices and PTT over cellular radios available, I am wondering how "traditional" private mobile radio companies survive. On the face of it, PTT over cellular (i.e. network radio) offers international coverage or very local coverage.  For example, lorries could be tracked internationally, and drivers contacted as if they were in the next village.

446 or similar radios offer basic communications well suited to pop-up events or occasional use.

Between the 2, most PMR use is covered at sensible prices. PTT over cellular often has GPS, photos and big data capacity too.