They actually did that? I havnt been to Maccas in years due to no vegan options besides coffee with soy milk though their coffee is not that good anyway. I dont expect the wifi to be fast but I expect to be able to use it for stuff other than looking at the menu.
Honestly I think they did that more because people would just lurk there, like buy one single cheap item and then sit there for 6 hours on their laptop browsing Facebook or whatever.
Individual owners can mostly do what they want. Locations in poor communities have lots of challenges with homeless folks using the restaurant as home base.