The release of Windows 10 is Microsoft's attempt to correct some of the stutters of the past few years.
Take a look at the tables.
As Table 1 shows, Windows 8's two versions never really managed to displace Windows 7 on the world's desktops and laptops.
Microsoft still dominates PC operating systems, however, with the nearest competitor, Apple's OS X, at just below five per cent.
When it comes to mobiles or tablets, however, mobile-ready Windows 8 failed to displace Android or iOS, which have divided the market between them, as Table 2 shows.
As Table 3 shows, one of Microsoft's worries is fragmentation of the Windows market.
As late as 2009, one version of Windows -- XP -- had almost 80 per cent of PCs and tablets, but neither Vista nor Windows 7 managed to replicate that dominance.
The challenge is to get XP and Windows 7 users to switch to Windows 10; a double challenge in price-sensitive India, where, as Table 4 shows, XP -- more than a decade old - has almost a quarter of systems, more than double its worldwide proportion.
Another attempt in Windows 10 will be the effort to revive Internet Explorer -- as Table 5 shows, Windows' native browser has only 12 per cent of market share.
For Microsoft Corporation, the attempt will also be to get net income growing -- as Table 6 shows, the stagnation of its earnings is a sharp contrast to its fellow behemoths, Google and Apple Computer.
Both also comprehensively outscore Microsoft in earnings per share, shown in Table 7.
Unsurprisingly, its stock price was relatively stagnant for years - although, as Table 8 shows, there was a bit of a rally in the past couple of years.
