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Well, Microsoft's gross income for 2008/09 was $58.4B US, IBM's was $103B, HP's was $118B, Oracle's was $23B, SAP's was $16B. That's $318B (admittedly it contains some hardware dollars). You've got to estimate that total is only a small percentage of the total software services marketplace - you know, all those ISVs and consultancies which install, maintain, and support the software sold by the big guys. $1 trillion = 1000 billion in the US. I'd say $1T US is probably underestimating things...
Yes, but I'm sure that saying "MS Office 2007 will implement MSOOXML, which we've admitted may not be technically possible" will be enough to justify it's continued use.
Sorry, I forgot to include that little point in my previous posting. ECMA 376, which based on the OOXML which Office 2007 uses, is not ISO/IEC 29500. Why do you think MS will implement ODF before '29500? "Oh, let's do ODF first! It's harder to implement than OOXML - we can just whip that out when we feel like it!"