Im pretty optimistic that things will be "back to normal" within a year... (people are welcome to disagree) here's why:
1. Society at large is slowly starting to adjust back to some normally (with precautions of course) masks may be around for a while. In the Spring, my school shut down for the remainder of the year. This year, we made the necessary adjustments to attend in-person safely and its working. Everyone has to wear masks, we are spacing desks, etc. The kids and parents comment all the time how happy they are to be back and how much more they are learning. People grumbled at first about the precautions but have since stopped because its working, and other schools in our area with less precautions have had outbreaks. I think we will have a vaccine by the middle of winter (Dec/ Jan) and will have it in wide distribution by next summer.
2.Higher attendance at Disney is what allows all those special touches and extended hours that we love so much and it is on the rise. The reason that there are dozens of performing acts and special shows that appear only during Christmas is because that is the busiest time for guests to visit. Disney had to cut the extras recently because WDW was a ghost town over the summer. The extras are all about improving guest experience, they will come back as the people come back. The same is true for operating hours. If there are only 5,000 guests in a park, Disney won't keep the gates open from 8AM to midnight. The operating hours are starting to creep up again. Disney always starts with bare-bones hours and then expands as needed. Hours extensions mean that more guests are coming, entertainment won't be far behind.
3. Parades and Fireworks: Yes we miss them, yes they cause crowding which is bad juju for COVID times. Fireworks and parades are not purely a "Disney being generous and greedy 'ol Chapek taking them away to cut costs" Fireworks are a way to keep you in the park longer. If people stay for parades and fireworks, chances are they buy lunch and dinner in the parks more than offsetting the expense of putting on the show. Dining inside with COVID requires spacing which cuts in to Disney profits. Many dining experiences are starting to come back. Fireworks and parades wont be far behind. I think MK won't have fireworks until next May at the earliest, but expect Epcot to have them even earlier. My guess is March with spacing spots are WS lagoon and some sort of very limited dining package for Fantasmic. Disney wants to fill those restaurants!