"He spoke about four pillars upon which this trust is built:"
All well and good, but there is a fifth pillar that is necessary : respect for the customer.
Microsoft have thoroughly pulverised that pillar with their deceitful and malicious push to get previous customers to move from Windows 7/8.1 to Windows 10 whether they want to or not.
When I see an unambiguous and complete apology for this previous behaviour, a statement that the new-year push to sucker more into Windows 10 by fiddling Windows Update has been cancelled, and a change to Windows 10 such that the user can turn off all telemetry - then I will consider that the fifth pillar might exist.
Until then - there is no reason to trust Microsoft. No Sale.