Why can't you buy helium?

I've been hearing a lot about the potential of helium in the crypto world, but whenever I try to purchase it, I hit a brick wall. So, here's my question: Why can't I buy helium? Is it because the supply is too limited? Or is there some regulatory hurdle I'm unaware of? Maybe there's a specific exchange or platform I should be using? I'm just curious about the challenges involved in acquiring this particular cryptocurrency and how I can overcome them. With so much buzz surrounding helium, it seems like there should be a more straightforward way to get in on the action. Any insights you can provide would be greatly appreciated.