God, where did the 1990s come from in here?
The views on VDI and what is achievable in here are, frankly, laughable. Perceptions of what is possible, beliefs about how complicated it has to be, all of it screams "I don't know the subject matter, but I'll post anyway".
Every day I build desktop virtualisation solutions for hundreds or thousands of users. Every day they deliver better than desktop experience to users who are very pleased with the results, with IT departments thinking that VDI is magnificent and delivers exceptional soft benefits to them.
If you haven't a clue what's possible with VDI, I recommend having a look through the nVidia GRID vGPU for VDI pages, and seeing what today's VDIs can do.