First I would like to commend Vlado for speaking out here, can't be easy. At the end of the day, the emotional outpour is obviously a reflection of people's passion and in the heat of the moment. Hopefully no one hates nobody, we're all enthusiasts of the industry and Vray is what everybody compares themselves to.
I do feel that the previous poster, matsu, makes some valid points though but there is another aspect in terms of competition. Competition is important, but I think both Vray and Corona has more to worry about products like Unreal and Redshift/Fstorm than each other, since they approach the problem differently. Being so similar, joining forces is perhaps the smartest they can do. The difference with Autodesk is that they don't have dedicated visionary founders at the helm (the day Ondra leaves it is another matter) and have shareholders etc. Max and Maya is just a portion of a huge machine.
I also share the pessimistic/optimistic sentiments of Matsu, but at the same time I really do think Vlado together with Ondra realizes that Corona fills a gap in the market and that they in an ideal world reach different users. I switched to Corona because I wanted less complexity and I like stuff like the material preview, ease with IPR, no hdri dome, etc. Just easier for me. These things may not matter at all to someone following Grant Warwick's tutorials and wants full control and maybe integrate into a vfx pipeline. The day they reach feature parity, i.e. Corona has hair and whatever and Vray has bloom and glare in VFB and whatever, is the day it will be interesting to see what the users prefer. Not that I expect Chaos to share license percentage, but if they can share technology while having different user interface approaches I think we could get the best of two worlds, and it may not matter to Chaos which version the majority picks as long as it is one of them. Vray may for example cater to a more demanding market in terms of control, and Corona may offer the same functionality but less 'tweakability', which ultimately warrants a higher price for Vray as it is a smaller market that demands that kind of control.
Fair enough?