Because they have a huge amount of assets - but also a growing pool of pensions to pay out. So it makes sense for them to put a limited part of those funds int

Because they have a huge amount of assets - but also a growing pool of pensions to pay out. So it makes sense for them to put a limited part of those funds into risky ventures. I'm sure at some point they invested in, for example, Apple when that looked like a dangerous proposition. To be clear - I think anyone "investing" in crypto is likely to lose out in the long run. But if you are a large institution it makes sense to spread yourself into as many ventures as possible.