Whatever the circumstances, risks taken by directors don't always pay off. There may even be times when a risk pays off financially, but doesn't either critically, or in the scope of a director's overall career. Risks aren't all the same, and they're not all zero-sum. Many famous directors have been impacted by them.
Sam Raimi's attempt at a prequel to The Wizard of Oz is horrendous. The characters are completely wooden, and the script is bereft of any life. What's more, as is typical with many recent films with a budget of $200 million, the CGI is deadening, distracting, and awfully silly looking.
Aside from the Spider-Man trilogy, Raimi has always been at his best working with small budgets and has never been much of a blockbuster filmmaker. Oz the Great and Powerful is an excellent example of why. This sterile, joyless adventure to the Land of Oz is utterly forgettable. Stick with the 1939 classic.
James Cameron did something with Titanic that had never been done before as far as the scope of a blockbuster film is concerned. The massively successful film remains one of the highest-grossing films of all time, even when adjusted for inflation, and retains many millions of fans worldwide.
The film has also become a sort of joke to many filmgoers on account of its corny dialogue, its bombastic silliness, and its annoying performance from Leonardo DiCaprio. Cameron's pretensions came to a head with this film, and the director receives just as many eye-rolls as cheers these days.