Re: "When it's political, technology cannot do anything."
I agree, 800 programmes is absolutely ridiculous. I was involved with a few studies concerning migrating from a Widows desktop to Linux. In each case it boiled down to somewhere between 6 and 10 key programmes/applications that did not have a native Linux equivalent. I do not know the outcome of these studies for certain, I was only a consultant for part of the study but I believe one of the three resulted in a migration.
Obviously some migration effort and expense would be involved but the TCO analysis for a 3-5 year period always favoured Linux.