I'm pretty sure it wasn't 80% of the Desktop market. More likely 90%+ according to what I could find, with MacOS being in the 3-4 percent and Linux at less than

I'm pretty sure it wasn't 80% of the Desktop market. More likely 90%+ according to what I could find, with MacOS being in the 3-4 percent and Linux at less than 1%. And yeah, sure, you could run OS/2 or even BeOS, but these never reached statistically significant penetration. Just as today you can run Sailfish, or Cyanogen/Lineage, etc... the latter supposedly has a market share of 3% or so. Better than BeOS, Linux, etc... in 2001.