>34. Viewed together, three main facts indicate that Microsoft enjoys monopoly power. First, Microsoft's share of the market for Intel-compatible PC operating systems is extremely large and stable. Second, Microsoft's dominant market share is protected by a high barrier to entry. Third, and largely as a result of that barrier, Microsoft's customers lack a commercially viable alternative to Windows.
Viewed together, three main facts indicate that Apple enjoys monopoly power. First, Apple's share of the market for smartphones is extremely large and stable. Second, Apple's dominant market share is protected by a high barrier to entry. Third, and largely as a result of that barrier, Apple's customers lack a commercially viable alternative to iOS.
