Global economic instability, inflation, dollar depreciation and uncertainty have forced companies to look for alternative assets like Bitcoin as a future financial asset.
I don't think this is the reason those companies, and even the government are buying Bitcoin. Bitcoin will not help them overcome the global instability, which is a huge issue in economics and national well-being.
The reason why they are buying Bitcoin is that they do not want to miss out. You can imagine what those companies which had the opportunity in billions of dollars when Bitcoin was below $500 could have made. That mindset is what is pushing all of them to Bitcoin. Also, as you know, individuals, companies, and even governments are copycat, they just need a few to start to encourage them, which is what is causing buying
So, it's all about FOMO, just as we also see in AI.