Robert Downey Jr. is deep in rehearsals for his Broadway debut next month as an A.I.-obsessed novelist in “McNeal.” Next spring, George Clooney arrives for his own Broadway debut in “Good Night, and Good Luck,” and Denzel Washington returns, after a seven-year absence, to star in “Othello” with Jake Gyllenhaal.

Then comes an even more surprising debut: Keanu Reeves plans to begin his Broadway career in the fall of 2025, opposite his longtime “Bill & Ted” slacker-buddy Alex Winter in “Waiting for Godot,” the ur-two-guys-being-unimpressive tragicomedy.

Broadway, still adapting to sharply higher production costs and audiences that have not fully rebounded since the coronavirus pandemic, is betting big on star power, hoping that a helping of Hollywood glamour will hasten its rejuvenation.

Even for an industry long accustomed to stopovers by screen and pop stars, the current abundance is striking.

It reflects a new economic calculus by many producers, who have concluded that short-run plays with celebrity-led casts are more likely to earn a profit than the expensive razzle-dazzle musicals that have long been Broadway’s bread and butter.

For the actors, there is another factor: As TV networks and streaming companies cut back on scripted series, and as Hollywood focuses on franchise films, the stage offers a chance to tell more challenging stories.