The Key difference was MS was an effective Monopoly in their market with something like 90+% of the market share Amazon is big, but still is only about 36-40%

The Key difference was MS was an effective Monopoly in their market with something like 90+% of the market share Amazon is big, but still is only about 36-40% of the e-commerice market share, and far far less of the over all retail Market Share which is still dominated by Wal-Mart