"doesn't make sense".

What doesn't make sense is overthinking it. If the price of Helium went up over the years, the price of Helium is going to keep going up over the next years. When everyone tells you that we're going to run out, then the value is simply going to go up.

What people say about profitability is irrelevant. What matters is the price trend, not their opinions.

Now go take a look at charts. You're not going to like it. :)