I don't claim to know what the true value of Gamestop and AMC should be. However, there is no way I would consider purchasing these stocks.
Neither of the stocks controls their own content. And if you don't control content in entertainment then you need to be able to offer an incremental value proposition in delivery. Neither of these companies are the best solution for delivery. Or finally a way to drive enough adjacent revenue. I don't see enough adjacent revenue for either of these companies.
For Gamestop: There are multiple different methods to receive games and gaming accessories than visiting a store.
For AMC : Netflix with OTT content changed the entire landscape. And now the pandemic has shown Universal, HBO, and soon Paramount Studios that it is more profitable and lucrative to open movies via their OTT service rather than a movie studio. That genie is not going to go back in the bottle. This is not to say there will not be movies in studios .... there will be ...but windows will be much smaller and OTT revenue will be much bigger than movie theaters.
This is all a bunch of short term maneuvering but long term you make a great point about Gamestop and AMC.
Gamestop is a dying business model and I honestly don't see how they are viable at this point. Gaming at some point is going to be all digital. The gaming model we grew up with is being phased out for digital platforms. My kids like to watch gamers on YouTube (don't get me started) and go for the games they watch. A bunch that are things like Roblox and Among Us currently and those aren't supported by traditional platforms. We will probably see an ebb and flow between traditional and streaming content but console designers are likely to pivot to more streaming, or at least download able platforms which will kill the content companies like Gsmestop can provide.
For AMC, it just costs too much. For Blockbuster movies they can make it work. For example I watched Avengers Endgame the first two days it was released. The first time was a matinee at the local theater. $5 ticket, $13 for all the popcorn and pop I could drink. The 2nd time was at an AMC an hour away (was in town, and had a chance to get the big theater experience). $20 for a matinee ticket and at least $20 for the same refreshments. For someone who likes the theater experience, I'm fine with my local place, but if my only option is the larger more expensive theater, I'll either wait or pay for streaming if it's something the kids would want to watch. $30 for streaming and a couple of bucks for snacks vs. $50-$75 for the experience doesn't pay out for a lot of people. To your point they would either have to develop their own content or become remarkably cheaper to maintain viability.
I think for theaters in general the smaller independent model may be better going forward. For me taking the kids to a local movie may be more expensive than staying at home and streaming, but it's not major theater prices and you are supporting a local business. I think after all of this you will see communities support that type of business way more than they will a corporate model.