Patton said it best "Good tactics can save even the worst strategy. Bad tactics will destroy even the best strategy."
Business plan = Strategy
Execution = Tactics
The dot com’s failed because they were mostly formed out of greed by untalented opportunists with an eye on getting rich.
You should care more about creating something real, real products, employment, and create them with passion.
So if you are going to start a company, it’s not your business plan
that’s going to save your ass, it’s the people with whom you surround
yourself, the talented, dedicated, morally straight folks that care
about the business and its success. Besides, you’re going to throw out
your business plan in the first year anyway.
And I didn’t even need an MBA from Harvard to figure that out.