«Since there will be "no more versions of Windows" and "only updates to Windows 10", I'm curious how Microsoft will handle getting customers to "pay for Windows upgrades".»
Microsoft has stated pretty openly the obvious truth from OS surveys and telemetrics that statistically "no one" ever has paid for Windows upgrades. By far, statistically, consumers bought a PC and used whichever version of Windows came with that PC for the lifetime of that PC.
In Enterprise where the cost model already including support and servicing and Windows upgrades, there was plenty of feet dragging and Enterprises have statistically paid extra to not upgrade Windows and/or paid for upgrades that they've never installed.
Microsoft seems trying to "right size" the Windows pricing model by taking into account the reality that consumers were already expecting to pay for Windows only once in the lifetime of a device and that Enterprises "like" to pay more to not upgrade.
Microsoft has stated pretty openly the obvious truth from OS surveys and telemetrics that statistically "no one" ever has paid for Windows upgrades. By far, statistically, consumers bought a PC and used whichever version of Windows came with that PC for the lifetime of that PC.
In Enterprise where the cost model already including support and servicing and Windows upgrades, there was plenty of feet dragging and Enterprises have statistically paid extra to not upgrade Windows and/or paid for upgrades that they've never installed.
Microsoft seems trying to "right size" the Windows pricing model by taking into account the reality that consumers were already expecting to pay for Windows only once in the lifetime of a device and that Enterprises "like" to pay more to not upgrade.