It depends on the number of
It depends on the number of stalls and how fast your car charges. In January I was driving from San Diego to San Luis Obispo and stopped at Thousand Oaks for lunch and a charge. All 20 or so Tesla stalls were occupied and there was a short line. I got in line and within 2-3 minutes enough slots opened up for me to get one. A Tesla supercharging session is typically 15-45 minutes so with 20+ stalls sometime was leaving an average of every minute or two. Since then Tesla has sped up the charge times via software update and some physical changes to the stations. Generally I never have to wait but on those rare occasions, it doesn't take long.
Conversely when traveling in Oregon with our Bolt I arrived just a few minutes after another Bolt who took the one and only 24 kw (slow, "fast" charger). I knew he would be there for at least an hour and a half.
The answer is still the same though: more and faster charging as more as more EVs hit the road.