It's true that a false theory can survive indefinitely, especially if it doesn't have real-world impact. Classical physics survived for centuries before being disproven by modern physics, because the differences are subtle except in extreme circumstances. Maybe quantum physics is accurate enough that the circumstances for non-negligible differences between it and "the truth" are so extreme, we never test them, therefore it's never disproven.

However, right now people are spending large amounts of money to build quantum chips. They're not explicitly trying to disprove quantum physics, but implicitly testing it through their experiments. And if these tests suggest that quantum physics has fundamental issues, they'll investigate, at least so if they realize quantum chips are impossible, they stop spending money trying to build them.