IANAL, but it seems that anyone who lost any money on GLBSE has a valid claim against someone,
I wonder if some of these listings, even though they are structured as "shares" of "assets", are no different than a normal contract between two parties. Party A can contract with Party B to buy some GPU hardware and apply electricity where then party A receives the agreed upon net results of that activity as "dividends".
I too am not a lawyer and won't even speculate as to whether or not a regulator would or could do anything for someone who lost funds "investing" in an "asset" on GLBSE. Following is a recent example of where the UK and the U.S. (SEC) went after fraud by an online business operating from the UK. The SEC asserts jurisdiction because:
Conduct by the defendants occurring outside the United States had a foreseeable substantial effect within the United States.
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http://www.onwallstreet.com/news/stock-picking-SEC-2678481-1.html?zkPrintable=1&nopagination=1 -
http://www.sec.gov/litigation/complaints/2012/comp-pr2012-72.pdf (SEC complaint)
Of course, this was an easy case for the agency -- there was evidence of pump and dump fraud occurring, the fraudsters misrepresented what they were doing and didn't disclose their positions to their customers, they weren't licensed brokers, etc.
Consider something like SATOSHISDAEMON "asset" on GLBSE. If the horse doesn't perform well enough the "asset" share price will drop, potentially resulting in a complete loss of funds. Offering this "investment vehicle" to the public might be in violation of securities regulations in certain jurisdictions. But I doubt a complaint to the SEC in hopes of recouping losses would result in much of anything in response, nonetheless the agency going in to try and "disgorge" funds from anyone.
As far as being able to use the legal system for relief would, I suspect, make the words in the contract for the "asset" really important. There is no such legal concept of having a share of a "project". (Thank Kickstarter for spreading that type of thinking.) So let's say a programmer has this idea, say to develop a bot that will do market arbitrage, and then creates an "asset" on GLBSE-- there doesn't seem to be anything the shareholder has a claim to. Slavery is illegal, and illegal contracts are unenforceable using the law so a "shareholder" has no valid claim against the programmer's assets or income (including profits or revenues from any other projects the programmer might be involved in).
So the more important question probably isn't "Is it legal to IPO and be listed on GLBSE" the better question is, why would anyone be an investor in a "security" where there's nothing real that is owned?