If Quantum is so good, why the Artsoft people doesn't put all their effort to finish the program.

I think is because It's going to bee free for UPGRADE no UPDATE, for the older owners of the previous versions (MACH 2 & 3).
For me, They should sell the program like a new program. (previous owners already have made some money with their version and I bet more than $150)
Artsoft people puts lost of their time and effort and that has to be rewarded (they have to earn something from this)
If you already pay for MACH 2 or 3 , pay again for new and enhanced version (you had do it for Microsoft for already 20 years)
This is my point of view and I hope helps to speed up the develop of the program.