The landscape around sales seems to be changing. Specifically Square Enix and From Software are putting their games on sale extremely late or only lightly discounted. Final Fantasy 7 and 8 (21+ years old) are still 13€, Sekiro (1.5 Years old) is 40€. I waited 3 years for Dark Souls 3 (mainly because I didn't care enough) to be on sale for ~20€.

I remember I got Dark Souls 1 for 3€.

Just some anecdata. I think publishers are aware that their games are valueable longer longer, and they don't need those $5 buyers really. Perhaps this only applies to very popular games.

TLDR: I wouldn't bet on this being on sale for $5 ever