I want a free market as well between Eve and Dust. Hell, that's part of CCP's 5-year plan as they announced back in Fanfest 2013. But being realistic here we know that this will take time. And the reason here has less to do with Eve hurting Dust and more to do with Dust hurting Eve if the Dust economy is implemented incorrectly. Keep in mind that Eve's economy is a huge beast that is delicate at the same time. Speculation, regional monopolies, economic interdictions, scamming, null-sec/low-sec warfare, mining, invention, production, freight deliveries, etc. all factor into the secondary market in both major and subtle ways in Eve.

The point here is that Dust's economy needs to be done correctly and in phases. First phase should obviously let us do simple trade-window transactions between two players for those of us who like to sell our excess BPOs and unwanted officer gear. This phase should also deal with the issues present in Planetary Conquest. The next phase should bring in the early stages of resource gathering with maybe an implementation of Eve-Dust ISK transfers with Eve players handling the production side of things. The final phase should see the full implementation of the market window allowing Dust players to establish system-wide and region-wide markets with the ability to pay someone else to move it for them.

But again, this is something best left to CCP's in-house economist who obviously has 10 years active experience with Eve Online monstrous economy.

Lore wise, New Eden already has another currency. The regular citizens don't use Isk. Isk is used by the various immortals, corporations and governments. If I remember correctly, each empire has it's own currency for every day use, for things like food and clothes and everything else the people who aren't buying ships and starbases need to buy.

Something like that would have been ideal for Dust as we're not buying things on the scale of spaceships. Sure our expense are higher than the average citizen, but not that much higher.