I hear you, but this was always the deal. If anyone ever said, "and we can use this for free forever and it will be updated for us for free forever" they were wrong.
Akka devs are 100% within their rights to set the terms of use for their product and thus their work. There was no bait and switch here. This is just how licensing works.
Sure? Which option is better totally depends on your use case. If it's a microservice running on 500 cores ($1M/year licensing), and a rewrite would cost 1 person-year (say $300k), then the rewrite is clearly worth it. But if you're running on 10 cores, and a rewrite would take 10 person-years... then it makes more sense to pay.
