Maybe they just see that it is second place on the market next to Bitcoin and the price is somehow cheap that's why this people got an idea to invest on it then hope that it move the same as Bitcoin then achieve many figures in future.
To bad for them to believe that way since if they just figure out that ETH has no fix supply cap for sure that they will get disappointed on it and think about that what they are looking for is almost impossible to happen. That's why its really better for them to stick on Bitcoin especially that this coin only have limited fix supply. If they fail on their ETH investment hopefully they won't point out that Bitcoin is also scam since there are crazy people doing this.
There is almost no way to figure out Etehreum's supply.. and I think even those closest to Ethereums money spiket cannot even figure it out (and would they tell others about it, even if they were to know?), which truly should cause a lot of concerns for anyone accumulating that smoke and mirrors crap.
This is the reason on why thinking about investing on ETH for long term is really risky action since they don't know on when everything will be fuck up. Imagine the possible inflationary pressure that might happen on this coin in future.
If they just focus on Bitcoin for sure that they won't encounter those issues what ETH have.
So let's see what's going to happen on the investment made on those institution which think about creating risky decision to invest on ETH.
Some folks speculate that Ethereum has addressed this matter by having some inside connections with various governments and/or financial institutions, yet upon real reflection, it seems crazy that anyone would consider that the inside connections are going to resolve the issues, because the end game ends up resulting in questions regarding who are the insiders that are controlling the supply and/or the issuance of the secret coins and therefore able to benefit from the insider connection and screw up the remainders. More or less it is the scheme of the current system, and difficult to imagine any way that is is not going to turn out badly... even if it could take a while and get some temporary propping ups (or additional propping ups from whatever current behind the scene proppenings are happening).