Major release slates are filled with continuations, revivals and adaptations of existing properties. The pattern follows from how a film is financed and sold rather than from a shortage of ideas.
Marketing costs are the fixed expense nobody discusses
Producing a film is expensive, but persuading a global audience that it exists costs a comparable amount and does not scale down for a smaller title.
A campaign has to buy attention in every market simultaneously, because a wide release opens everywhere at once and cannot build slowly.
A recognised title arrives with part of that awareness already paid for by the previous instalment, which is a direct saving against a fixed line in the budget.
Opening weekend has become the whole negotiation
Cinema chains and studios split box office on terms that favour the studio most heavily in the first days, and a weak opening shortens the run.
Word of mouth is now compressed into hours rather than weeks, so a film that does not find its audience immediately rarely recovers.
Familiarity is the only reliable way to guarantee a large first-weekend audience, because it does not depend on the film being seen first.
Financing rewards the predictable
Films are funded through a mix of studio capital, co-financing partners and pre-sales of distribution rights in individual territories.
Those partners commit before the film exists, and they are underwriting a forecast. A forecast for a continuation can be anchored to real performance data from the previous title.
An original is priced on judgement, which means either a lower budget or a higher cost of capital.
The downstream value depends on recognition too
A film's life continues through streaming licences, television, merchandising, theme park attractions and games, and each of those is negotiated on the strength of the property.
A property that can support several revenue lines justifies a larger production budget than the box office alone would.
That calculation systematically favours worlds and characters that can be extended over stories that conclude.
The strategy erodes what it depends on
Each instalment draws on accumulated goodwill, and goodwill is finite. Audiences become less certain that a familiar title means a good film.
When that happens, the recognition premium shrinks and the marketing saving disappears, which is the pattern studios describe as franchise fatigue.
The response has generally been to space instalments further apart rather than to change the underlying approach, because the financing logic has not changed.