I agree it's very unlikely that sabotage is what's going on, but what you're saying is the one compelling argument in favor of sabotage. "Everyone but that one actor has very bad luck" is exactly what sabotage looks like.
Except that actor has the most advanced space program in history. Its like saying Michael Phelps is part of a conspiracy to keep other swimmers from winning. Uh no. The world isn't one on even playing field. Some people are better than others and thus get better results.