BeOS was also hampered by promising more than they delivered --- I was just about bodily ejected from a BeOS user's group meeting when I asked how the presenter's slides were printed (at that time, BeOS didn't have printer drivers, a marked contrast to NeXT's use of PostScript for both display and printing and even having a rasterizer which had them adding a clause in later OS versions limiting the DPI for output --- folks were buying NeXT computers and using them to drive imagesetters, bypassing the normal PS license expense).