With the current condition of the economy, everyone seems to be concerned about the ability (or rather inability) to obtain credit. As entrepreneurship fuels the economy, this could potentially be a rather grave concern if entrepreneurs are unable to obtain credit to grow their companies.
However, although a recent survey by Wells Fargo indicates that optimism is low for entrepreneurs, "four out of five small business owners said they did not perceive credit as difficult to obtain."
Why is credit not that big of a concern for entrepreneurs? My guess is that entrepreneurs have learned to persevere and find a creative way to get things done no matter what. The bar can also be relatively high in order to go the traditional credit route via a bank. It typically requires an entrepreneur to think thorough the business opportunity, prepare a business plan and financial projections. These projections must be realistic and believable enough to convince a lender to take on the risk of the loan. Thus, entrepreneurs have likely found a few different options to get the financing they need, and if financing isn't available, they find another way to get through the situation.
That said, even if credit is not the main concern of entrepreneurs, how the economic conditions impacts their ability to sell their product/service obviously is. Unfortunately, there is no real quick fix here.