If you think from a different perspective that may be not reasonable. Consider a company that has multiple sources of income. One of the sources uses Akka and brings only, for example, 2.5 million a year. And now the expenses of running it will grow considerably, it may even become on the verge of sustainability because total income of the company is more than $25 million. It's not very reasonable in this case. That's why usually vendors have different plans to choose from.