Airlines are often not great for float, because their credit card processors often either keep the money, or require large amounts of restricted cash. AirBNB has tons of float along those lines.
For your example, if they have $20 MM of cash from some sort of licensing deal (no ongoing costs) I'd value it at $20 MM. That's exactly like having $20 MM in cash from some other source, except the GAAP shows over many years which doesn't matter, imo.
What they do with it is a capital allocation question, but it isn't different than what would they do with $20MM of cash balances.