It's because Microsoft has OKRs to hit that have nothing to do with UI customizability or even giving users what they want. I realized this in the 90s. Windows

It's because Microsoft has OKRs to hit that have nothing to do with UI customizability or even giving users what they want. I realized this in the 90s. Windows 9x, theoretically, should never have existed. I knew this because a DOS subsystem with great speed and compatibility, DOSEMU, existed for Linux. You could play Doom with sound at full speed in DOSEMU on contemporary Pentium hardware. If the open source community could do that, Microsoft, the developers of DOS, could develop a DOS layer for Windows NT that was much better than the sluggish, feature-incomplete layer they did ship. But they didn't prioritize the effort it would take to do so, especially since dividing the Win32 ecosystem into 9x, NT workstation and NT server allowed binning of different Windows versions at different price points.