It was a good decision for Gamestop to invest some of their cash holdings in bitcoin. They may not be the first company to do something like this, but when a company is open to investing their money in bitcoin, the market response tends to be positive, and that can be seen from their stock price which has increased by almost 15%.
Hopefully their plan to invest in bitcoin is not just temporary, but a long-term plan.
Most of the times when such projects invest in BTC they plan to hold it for long term and this also shows that the project is in the market for long term too, as there are projects which we see we quickly realize they are not going to be here much longer but when they have investments in BTC they plan to be there for longer period of time shows logevity and thus build trust among investors and more investment means bigger ecosystem and more marketcap and more listings and more adoption.
More adoption means more demand and if the tokenomics are also good of such projects, then the price will just shoots up.