In regards to developing, expanding and growing your business time is a valuable resource you need to consider, it's one of the most important tool to business growth.
I think most entrepreneurs disregard it because it's not an asset that is being bought with money, they feel when you put in money into a business is what makes it grow, but nevertheless you need to put in a lot of time especially when you're still in the early stage of your business and wants to develope.