Oracle was the best think to happen to Sun in 2010. You have to understand the market dynamics at UNIX vendors at that point. Look around. There are zero UNIX server vendors any more.
To be fair, IBM still has them. But IBM doesn’t care about AIX much anymore either.
Mostly they have a sustaining team, just like Oracle. Solaris is still supported but purely in a payed sustaining mode for legacy customers until 2034.
Amazon and Azure and Google etc are UNIX server vendors: what they vend is just for rent rather than purchase.