Cinema is much nicer to use, but that alone doesn't make it more professional than blender. There are thing about blender that are worse and things that are better. Cinema makes it much easier to love it for its UI constancy and overall logic of use. But right now Blender with cycles is so much more stable than cinema with redshift. You can download all old versions of it if you want to open an old project or if they droppend a feature. The node system in Blender ist more consitent than cinemas and much easier to use and then there are features that are not available for cinema like the compositor (yes it actually is really usefull) or eevee. But yes blender pisses you off every day when you are used to use cinema. Imho blender is just for another industry and another style of working.
Anyway less competition is always bad! I personally see this as a sign that the market for commercial 3D software is going to get really problematic in the future.
RIP Modo