It doesn't matter what film(s) you name, you can claim that none of them are an "enduring franchise". It is a matter of opinion.
Actually several films that definitely class enduring franchise. Harry Potter and it spin offs, James Bond, Fast and the Furious, Jason Bourne, Transformers, Star Wars, Star Trek, Jurassic Park.
After those 8 films you are scraping the bottom a barrel on what could be class as enduring franchise. There probably a few more, Toy Story, Shrek and the like but there can't be many more than that, that fits the description.
Most of them are locked down by established publishers already. Another thing to take into account is what could Frontier afford to actually license and it gets bit more complicated, some of the studios will certainly want up front payments on royalties, I would have thought there be a bidding war for Jurassic Park given how well Jurassic World did. It hard to believe Frontier would have beaten EA/Activision/Ubisoft who love buying up these licenses.
Plus the way Frontier published the info, means they would have been careful not to hype it up and be careful with the language they use, last thing you want shareholders to think is you got the license for Harry Potter when really all you got is the license for Sharknado! Which on the serious side, could leave them open to legal action.