Closed-source apps cannot be the future, even if they integrate bitcoin.
I am generally sceptic about false promises of "opening up later". This is not just about publishing source code. The whole product will have to be fundamentally different.
The people behind these project are afraid of competition. If you build on fear right from the start, you are for ever doomed.
Compete or step aside. Build #FOSS products. Many have done it successfully.