I don’t know if Wendys still does the 4 for (More than) 4 here. I won’t buy because you can’t sub the fries and they are just awful at Wendy’s. I used to eat there all the time. The prices got too high, the quantity too small even before Covid.
I don’t really see much competition going on between the fast food here. Back in the day Wendys was better than all of them. Not anymore.
The 4 for $4 was a cheap way to get filled up; not the tastiest, but it worked (and I believe it is still offered). BK one-upped them with a 5 for $4 (it included a cookie); I don’t know if that is still around. I do think they’ve all kept prices down on value menus; buying any combo is much more expensive.