@No. 1 : That's something they have/had on every OS they released
@No. 2 : ... a darn long time. Enough for a BIG percentage to go pass their taxing border
@No. 3 : not more than 'usual' on purchasing a new OS, afaik
@No. 4 : nothing new and nothing that would equal the 'losses' from the long free upgrade
All in all = much less profit from selling it
So, where is the profit plus for microsoft - also in the future ? ....
And I'm sure they aim at nothing else than more profit, than they could make with the 'usual' ways.