I happened to use a ZIP drive as well on the PC. There’s no relation to Macs here. Designers in the US tended to use Macs, yes, but this isn’t what drove USB adoption, and it would have happened in much the same way without them.
USB ZIP drive on a PC in 1999? Possibly with an added card. I called ZIP drives out specifically because I remember being surprised at how quick they were in comparison to SCSI attached ZIP drives. And how much less hassle they were.
I sort of agree with what you are saying, but don't underestimate the impact that the G3 had on the desktop computing landscape.
