Being predictable is not always a bad thing.
A predictable product that works well is much better than an unpredictable one that has no function.
Predictable story plot with much emotional substance and strong, interesting characters is much better than an unpredictable story with weak characters you can’t relate to.
Predictable move that gives great results is much better than unpredictable one executed on a whim.
But predictable has one drawback. It quickly becomes boring. And people tend to ignore boring.
The way around it? Every now and then do something unpredictable and risky. Even if it doesn’t work out, it will make your audience more invested, and your next predictable move more bearable.