If you notice, it’s getting harder and harder to find just plain chips anymore. That’s because of allergen and flavor sequencing on the production schedule. 75% of run capacity favors the flavored chips on the schedule over plain chips.
I'm so old I remember that all we had was fried chips and salt. Mom would always buy "Wise" chips in the huge tin can - it must have been 14 inches in diameter and that high (I was little in the mid 50s, so it probably wasn't that big. I think the cans were printed and didn't have the paper wrap like this pic shows. I also vaguely recall the Wise delivery man delivered those cans to your house like the milk man, but I could be wrong on that.

I was 10 when Frito Lay introduced "Fritos." I thought corn chips were awful. Terrible idea.
Lays introduced BBQ flavored chips in 1967 when I was 16. I thought flavored potato chips were awful. Another terrible idea.
Lesson learned -- don't put in charge of marketing!