So the big winner here really is the US.
They got Assange in a virtual prison for ~7 years at no cost to them (that cost was borne by the UK and the Metropolitan Police). You can't argue that being holed up in an embassy is that much better than prison.
What's more none of that ~7 years counts towards actual jail time he'll like serve in the UK (for absconding) and the US (the publicized charges are only the beginning). The one (?) remaining charge in Sweden will quickly fall apart no doubt.
Arguments that Assange deserve protection as a journalist are (IMHO) a stretch at best. Getting a hold of classified information is one thing. Aiding in defeating security measures to obtain it is quite another story.
But to me at least, the big problem is that Assange lost all credibility as a journalist over the Wikileaks handling of the 2016 election and related hackings (eg the DCC emails). You'll have a hard time arguing that Assange (and Wikileaks by extension) wasn't picking a side here and doing what they can to influence the outcome of the election.
A traditional media outlet with an op-ed section is one thing. Playing an active part in illegally obtaining emails and other materials as well as arguably passing on that information to a presidential campaign is quite something else.
Even Snowden filtered his classified material through reputable media outlets.
So now we have embassy (~7 years), fighting extradition to either the US or Sweden (2+ years probably), whatever prison time he has to serve in the UK (which will run concurrently to fighting extradition no doubt as it's typical to serve that time first) and then years, perhaps many years, in US prisons. He may not see the light of day until 2030, maybe 2040.