Being excellent in one thing is often cited as a key factor to success. For example by Google: www.google.com/corporate/tenthings.html "It's best to do one thin

Being excellent in one thing is often cited as a key factor to success. For example by Google: www.google.com/corporate/tenthings.html "It's best to do one thing really, really well" What insights do you have to proove the makers of the most successful tech startup wrong?