[querty1000]

Therefore, 3D BD releases will be reduced during 2017 and will stop to exist by the end of 2018.

like vinyl records? I see more that people that wan't 3D and need a new telly switch to an extra beamer instead of not using 3D anymore.

New content or new ways of displaying video content is what drives hardware sales. Not the other way around.

i think not. This was exactly what the industry dreamed of introducing 3D. That all the people with a 2 years old TV throw them away for a new 3D one. But nothing happend an 3D was called a flop. The same was later with "smart TV". Today all the people have only smart-TV because you don't get TVs without them.
The difference between 3D and smart TV or HDR is: you need a lot of work for 3D like polarisation folies on display.
The smart-thingy or the HDR-thing is build in the chips for the TV and must be extra disabled for the cheaper models. (or they save 10 cent for a W-lan chip)
So if you wan't to gain your profits: you will stay for HDR or smart-TV features, because they are already in the chips. You will delete 3D because it costs a lot in manufacturing and messed up the HDR results.

People buy new telly's if they a re too small, the tuner doesn't work anymore or they are defective. Most people are not that movie-watchers like us, they watch news or big brother or x-factor and give a shit about BT2020 color space and so.

For example if 3D Avatar had not been such a hit would we have even seen 3D for hang around for as long as we did ?

Avatar was aimed for the cinema, not the TV?

The same goes for HDR10 and DolbyVision, but at least that content is already streaming from the likes of Netflix & Amazon & others, where is the new 3D content in all this online streaming ?
Mainstream consumers want Plug n Play with minimal fuss or extra external equiptment needed, which is exactly what HDR10 and DolbyVision is going to give as consumers upgrade their displays.

Mainstream consumers does'nt care about HDR. They don't see a difference in picture. They even don't see the difference between SD and HD or watching movies in the false aspect ratio and doesn't take care about ist.