As their attorney [not that I am of course lol], I would say that seems very subjective and consequently arbitrary.
Indeed, it's subjective. Whether a market is mature or not cannot be properly quantified. However, I find that it's pretty much a requirement, else, as @bbc.reporter correctly noted, market manipulation would cause a lot of drama (and maybe lawsuits too). But is Forex or stock market really-really mature and with no manipulations? Prove it!
And that's why my point was that the only ones with actual gains will be the lawyers with fat paychecks.
I'd also argue that having an ETF (or more than 1) would help stabilize the prices because the volume could increase significantly.
This is imho wishful thinking. If there are no sellers, the volumes cannot rise. Even more, if the volumes will be correctly reported, they may go even lower.
Also keep in mind that (afaik) there are 2 kinds of ETFs and only one is backed with actual BTC reserve, hence with correct effect on the market. And by correct I mean that some will try to manipulate the bitcoin market so they can earn more on the financial one.
Market stabilization may be achieved if more institutions will invest and the price will be even higher. But I cannot be that sure.
I would also make the argument to the Biden administration (Ditto Obama and Trump before): does the US want to be at the forefront of crypto or lagging? Does the US want to be taking the same side as authoritarians the world over or supporting people who want the freedom to make their own decisions? (That wouldn't help with this admin).
I don't feel US far behind, with or without the ETF. This was a good argument before Michael Saylor and Co...
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Yes, I've plaid devil's advocate here. I am not against ETF, but imho one can build a good case whether is pro or against it.