larger customers expect net-terms (e.g. net-30) and have monthly accounts-payable processes. No customer pays instantly.

my strategy is to raise prices, then offer a discount for customers who pay net-7 and even greater discount if they pay in advance.

fun story: I once got $400,000 from a famous venture capital firm who was buying a service from my company and they paid 6 months in advance for 5% discount. In other words, dilution free financing from a VC fund !!!