The €25k working capital requirement seems a little prescriptive to me (in the US there is nothing like that for non-finance industries, although some businesses need bonds which pay clients/customers if you fail to perform), but it's also the case that most businesses are going to need more than 25k in working capital once they're beyond the startup phase, and outside of tech you typically have working capital requirements that grow with increasing revenue, meaning your accounting profits can be growing but you can still run out of cash since you spend it before you can collect it.