First, the revenue is a fixed number, this is usually a bad idea in contracts that will last a long time. There should be some adjustable indexing going on.

Second, the revenue number is in USD, this is probably less of an issue, but still creates ambiguity. What if revenue is reported in a different currency? Do we use an exchange rate? Which one? At what point in time do we choose the exchange rate? At the time revenue is reported? At the time the license comes into effect? Unclear.

Third, there are probably ways of skirting thresholds by artificially manipulating your corporate structure through subsidiaries etc., changing both revenue and headcount. How would that be solved?

Fourth, how is labor measured? By average salary? By specific salary? What counts as labor on the project? Who approves the labor? This also adds management and accounting overhead to the open source project, which isn't great.

I applaud the efforts, but I see some challenges in using the license. I hope these issues can be answered!