The 'why' behind developing a strategy

I've read some interesting quotes about strategy in the last months, prepping for the current strategy-focused position I have. The one that stuck with me was from Verne Harnish, CEO of Gazelles - a growth consulting company. It give an interesting view as to why we need solid strategy in a company.

"Every morning in Africa, a gazelle wakes up. It knows it must run faster than the fastest lion or it will be killed...

every morning a lion wakes up. It knows it must outrun the slowest gazelle or it will starve to death.

It doesn't matter whether you are a lion or a gazelle...when the sun comes up, you'd better be running."

Strategy tells you where to run to either eat or to not get eaten.