I'll caveat your comment with "existing". 90% of businesses will fail inside 5 years and always got the same reason, because they run out of cash. Unless you

I'll caveat your comment with "existing". 90% of businesses will fail inside 5 years and always got the same reason, because they run out of cash. Unless you are an outlier, and manage to balance revenue with expenses every month [1], you will need to average positive cash flow or you'll run out of cash. [1] of course if you are small, and tolerate fluctuating pay, then you can balance the books by not taking a salary but taking out all excess revenue each month.