such physical media will be made illegal

not quite the same, but in Hungary you had* to pay an extra tax on writeable CDs because it was assumed that you're buying them for piracy 🫠 iirc the tax went to support the music and film industry

(* maybe still have to, but I haven't lived there in more than a decade)

As there is no way for the NSA/CIA/FBI/PTA to monitor what’s on a flash drive in your pocket, such physical media will be made illegal.

I'm old enough to remember when it was impossible to get your hands on a CD-Burner, because the industry didn't want people to use discs with 650MB capacity to store and transfer files between systems. I suppose we could see some kind of return to non-writeable media, but I'm not holding my breath. Data transfer is the entire backbone of the modern internet. If anything, flash drives will simply go out of fashion because we'll have even more data-dense and rapid transfer alternatives in another five or ten years.