Museums need to adapt and offer something on top of VR, something only they can offer.

For instance, for the last 7 (!) years I’ve been building and managing an online interactive exhibit of 1920s Berlin where people actually get to live (with their avatar), there are apartments, shops, cinema, theatre, cabaret, etc.
I’ve also worked in museums and help build exhibits.

Some people moved in and stayed in the city I build for years, paying rent, thus supporting the project and learning a lot about daily life during the Weimar Republic.
No museum can compete with that.

Now where a museum could compete, or better; add to the experience, is by combining VR with their exhibit and space.

For instance, imagine coming to a museum exhibit about daily life during the Blitz of 1940.
You put on your VR headset and enter a large space that without headset just looks like a bunch of painted cubes bit with the headset you see a street, houses, cars.
The cubes have textures so they feel like walls of buildings or the metal of a car.

You ARE there, London 1940, you’re in the middle of it, you can enter houses, look at shop windows, see 1940s people walk by, stop them for a chat and then… sirens go off, people run, the sky turns black with planes, you hide in a shelter, you see the smoke, you hear the bombs and when you go outside again, you see the damage.

An amazing experience visitors won’t forget.
An experience they can’t really get in VR at home because they can’t really walk around much, they can’t touch anything but also, VR is generally a solo experience.
Sure you can be online in a Blitz exhibit and there can be other people online you can meet and chat with, but in the museum exhibit, there could be 10, 20, 30 real people in that Blitz street, who join you in that shelter when the bombs start to fall, who react unpredictably, who you can also interact with.
You can actually hold your mothers hand who is sitting beside you, smell the people next to you in that small space, hear a real child cry.

This is an experience you need a large space for and a 3d surrounding in reality, you can’t do that with your computer at home.
The only other place where you can have VR experiences like this is at themeparks.

So, go to a museum for the ultimate VR experiences AND then, afterwards, see the exhibit and see the place that bombed you, see the gasmask you saw a child wear, see the siren you heard, etc, etc.
Suddenly children are given the opportunity only the elderly have; they remember and understand something in a WW2 exhibit because they remember it.