Prime isn't anymore (I once almost bought that a few years ago, but didn't care for the renderer). Their new system sucks big time because it's more expensive then usual when they do the switch to rentware.
But still C4d will not go away. It's very capable software, very wide spread (for a while it seemed to dominate the market from what I read), and to jump the boat is always a very big step. On a professional level it seems to take a year to get fully into the new software and it's special capabilities (while you can work on a lower level from day one and be productive). And all the plugins, the training, all that is a big investment. Of course they will loose users to blender, no doubt about that, but C4d will stay important and still wide spread. So most developers will keep at it, at least for a while. It's certainly the bigger market than quite a few other 3d packages (like lightwave & modo).
What really irks me, Maxon got the Intel denoiser which seems darn good, (almost?) on the same level as nvidia, while the AMD denoiser ... well, it's no match for the two others (they have different algorithms, yes, but somehow to me the result looks in most cases not better than what can be done with a little blurring in photoshop, sometimes even worse). That makes it even more interesting for Mac Users. And Maxon has gone Metal. While the future of blender on future MacOSes is still unclear (blender foundation will not do that conversion).
As an aside, Otoy is probably not so happy about Maxon buying Redshift (with that integrated you don't need Octane anymore).
And the hyped Blender 2.8 seems to have a big impact on the whole market, for example with autodesk selling a cheap Indie version of Maya and 3dsmax (250 $ each, available only in english speaking countries; it's just a test drive. But one has to make sure to cancel automatic renewal, because that will be the full price version).
There will be other changes, some other packages going cheap maybe, others going very expensive because they seem to believe that's not worth the effort anymore to deliver to the 'budget-customers' who (in their opinion) will jump the ship anyway sooner or later. They concentrate on those who need more than blender delivers and can pay the price. (I really fear that in 10, 20 years or so we will have the choice between free or very cheap stuff (and not that great) or wonderful things at crazy prices, while everything in between could vanish).
And every firm has announced some exciting news for their software, new plugins, new this, new that. At the moment there seems to be a big movement in the market, the traditional 3d developers not so sure, how they should handle the situation of a very changing market that's actually growing.
About Vue: the Creator solution doesn't allow export and has a render size up to 4k, which makes it useless for me (but last time I looked, even that was quite expensive. Now it's reasonable again).
So I believe the market is changing very fast at the moment, all a bit unsure, all a bit changing, and if you need something new related to 3d, be that hardware or software, in my opinion you should try to wait a little bit (and maybe be prepared to act fast when you get a bargain).