Fear is an inhibitor, for the most part—an inhibitor of evolution and innovation. Sure, sometimes a bit of a fright helps us get moving, but if we’re too scared to take risks, we can’t develop.
If fear is part of the climate you create, you might get higher productivity but you won’t get innovation. You’ll need to make those calls about direction and strategy yourself—quite a responsibility really.
Might be better to create a climate of trust, and, yes, high expectations, but not pervasive insecurity, not unless you want to shoulder the whole leadership burden yourself.
The more fear you create, the more you’re in sole charge (for a time), and the more you’re alone.