You argue about a problem that is only valid for fiat currencies. That problem doesn't exist with bitcoin. So why would anyone want to use a less-secure fiat currency on top of a fully-secure cryptocurrency in the first place?
They wouldn't. They just don't know it yet.
Both the Winklevoss ETF and the Realcoin product are
gateways.
Yes they are gateways but there is a crucial difference with Realcoin when it comes to regulation. In the Realcoin case they have to be both the on-ramp and the off-ramp and this is a serious limitation when it comes to international transactions. Consider first a pure Bitcoin example using existing providers:
A person (say myself) in Canada purchases BTC for CAD using CaVirtex. This same person then uses the BTC to purchase goods or services from a US based merchant that uses Conbase (I have done this). Now CaVirtex only needs to concern it self with Canadian regulations since they only provide exchange services in Canada while Coinbase only needs to concern itself with US regulations since they only provide exchange services in the United States. This makes the regulatory process affordable for both companies.
Now the same transaction using an unrelated on-ramp and off-ramp would not be possible with Realcoin since Realcoin has to be compliant with regulations at both ends. This is the same limitation faced by PayPal, VISA etc.
I completely agree that the obstacle for ideas like Realcoin are
regulatory as opposed to technical. It would be hard to argue that Realcoins are
not securities, and thus Realcoins would almost certainly fall under SEC jurisdiction.
But I don't know if I'm following what you are saying in your post. Let's say CaVirtex received regulatory approval to issue dollar-IOUs using the Open-Assets protocol (colored coins). It seems to me that once the product was approved, all CaVirtex needs to concern itself with is redemption of those dollar-IOUs back into account balances. CaVirtex doesn't need to care whether those particular dollar-IOUs went through 10 sets of anonymous hands prior to making their way back to CaVirtex for redemption. And if this is the case, someone from China might happily accept a CaVirtex dollar-IOU at face value, even though they have no plans to redeem it. They just trust that the IOUs will always trade near face value as long as
someone is able to redeem the IOUs at CaVirtex.
In any case, as much as I'd like to see it, I really can't imagine the SEC allowing companies to issue "bearer"-IOUs using the blockchain at this point in time. I think these types of products are at least half a decade away...
In the above example the CaVirtex dollar-IOUs would only be redeemable in Canada by Canadians. So they would would likely be accepted at face value in Canada but would likely trade at below face value in China since someone in China would eventually need to find someone in Canada to redeem the IOU for them. The discount could easily be 5% or more. The net effect of this discount is to create an effective transaction fee and we are back to the VISA, PayPal, Western Union etc. costs. Of course if they were redeemable in China then they would also trade at par there but then CaVirtex would have to also be regulated in China increasing their costs and again we are back to to the VISA, PayPal, Western Union etc. fees costs.
By the way I do agree that these IOUs are securities but unlike the United States where there is one securities regulator there are 13 separate securities regulators in Canada one for each province and territory, further adding to the compliance costs. By the way the Canadian government is trying to create a national securities regulator to simplify the compliance burden but has met with stiff opposition from Quebec and Alberta. The problem here is not dealing with one regulator, that is easy. The problem with international money transfer using IOUs is dealing with literally hundreds of different national and sub national regulators all with different and sometimes conflicting requirements, and with each regulator acting like its own little fiefdom. Ever wonder why we see so many innovative payments systems using IOUs that only work in one jurisdiction but hardly any that work internationally?
The beauty of Bitcoin is that it allows one company in Canada say CaVirtex to be the on ramp and another
unrelated company in the United States (Coinbase) or in China (BTC China) etc. to be the off-ramp and vice versa. This is not possible with IOUs.