It is very VERY difficult to judge what was inevitable, because things in hindsight often look obvious.
I could take 10 of the smartest people here, who hadn't seen this patent - only the problem it was supposed to overcome. And we could spitball ideas for a few hours. And maybe come up with a solution. Does that mean it is inevitable?
No, because even though that team possessed the ability to solve the problem, statistically speaking they were not ever tasked to solve the problem, and so would not have done so.
This is why we have multi-disciplinary projects at research institutions - to find discoveries by putting together people with new and different understandings and backgrounds. And what they come up with is novel.
To be inevitable, you would have to come up with a solution that worked, within the existing framework, and was capable of handling the type of data requested.
A plurality of computer nodes communicate using seemingly random Internet Protocol source and destination addresses. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are quickly rejected. Improvements to the basic design include (1) a load balancer that distributes packets across different transmission paths according to transmission path quality; (2) a DNS proxy server that transparently creates a virtual private network in response to a domain name inquiry; (3) a large-to-small link bandwidth management feature that prevents denial-of-service attacks at system chokepoints; (4) a traffic limiter that regulates incoming packets by limiting the rate at which a transmitter can be synchronized with a receiver; and (5) a signaling synchronizer that allows a large number of nodes to communicate with a central node by partitioning the communication function between two separate entities.
Some of that sounds rather basic, but together, with the other involved patents, it is well more complicated than "let's use that p2p stuff I heard about". Please, if you want to, go into the specific claims of the patents and tell me what is inevitable, and how, rather than taking the terrible summaries of the patents as being representative.