Here are some factors to consider:
* The success of the first film: While "Stormbreaker" wasn't a massive box office hit, it did perform decently and garnered a dedicated fanbase. This could encourage producers to explore adaptations of other books.
* The popularity of the book series: Alex Rider books continue to be popular with young adults, which indicates a potential audience for further adaptations.
* The changing landscape of film and television: Streaming services are increasingly investing in adaptations of popular book series, offering a potential platform for Alex Rider.
* The creative team: Whether or not a successful team can be assembled to adapt the remaining books is crucial.
Ultimately, the decision to adapt the remaining books rests with the rights holders and potential production companies. It's important to note that while there have been no concrete announcements or confirmed plans, the possibility remains open, especially with the increasing popularity of the series and the potential for a successful adaptation.