There are some interesting consequences to this:
1. Jolla is the first OEM to ship a non-Android OS with Android compatibility built in.
2. Jolla is the first OS maker to not rely on Web apps to fill in for a lack of app store content at launch, and instead go for native app compatibility with another platform.
It's a unique launch strategy, with very low ego content. I think they will be rewarded with market acceptance for taking this approach. Have cake. Eat cake. Why not?