Either way good luck finding someone working for free.
Free? Why do anyone creates any application on any platform? Sure, some for hobby, but most to make money. They have an idea, they create it and try to make money with it using various business models.
If they need help, funding, etc, they will make a proposal, a business plan and try to get funding for development in exchange for future profits.
There were many discussions about this and a group of us will be ready to provide funds for good ideas when time comes.
Why not just wait till Lisk reaches a stable version, fork it, and then release your dapp on that new fork?
Lisk doesn't have any dapps right now for anyone to stay on it, so people will jump ship pretty easily.
There is not benefit for a dapp developer to run their own main chain.
Running the Lisk network (or any network for the same code base) costs thousands of dollars every months. It will cost more in time as usage increases. Besides money, it's costs time too.
There is other considerations as well why it would be impractical but that is more than enough reason not to.