Hello, i am having a problem with a Stackelberg problem:

Two companies are selling their fish in a market with inverse demand: P(Q)=100-Q

Company one arrives at 8h and company 2 at 10h. No other competitor. They both have a marginal cost of 10. Company two also has a one time fixed cost of F. We know if company 1 sells less then 70 units company 2 can be profitable. Should company one let company two enter? And what are the nash equilibrium in subgames?

I usually know how to do a Stackelberg, but with this kind of undefined fixed cost im lost. Thank you for your help!