By being faster, easier to use and cheaper.
DeltaView has right-click integration; that will always be faster than opening a web browser, logging in, and transmitting files into the cloud.
> easier to use
It's a tie at best. See the right-click integration point, above. DeltaView has a huge amount of customization potential, but most users don't need all of it.
> cheaper
That's what worries me most. What is the revenue model and why should lawyers trust a stranger to not misuse their docs (or Anonymous to not hack the server, etc)?
To put it in perspective, DeltaView is (at most) $175 bundled with other software. To a lawyer, that's an hour of billing time at most. I don't know why a lawyer would rather risk sending confidential docs into the cloud when the alternative is software that costs (at most) one hour of billing.
I don't mean to come across harsh, but the product appears to be at best an iterative improvement in an industry that is very slow to change and is very concerned about confidentiality. The benefit of "it's free" does not carry nearly as much weight among lawyers, who often able to pass costs along to their clients and don't have the same cultural attachment to "free" as do average 20-something developers.
It just seems like the professional legal market is the wrong fit for a very powerful tool. Are there other markets worth considering?
You're undercharging :)
But apart from that you're exactly right.