Why does Microsoft not have any good ideas?

Hello everybody i�´m new to the forum and i have a very good question:
Why does Microsoft not have any good ideas?
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You maybe wonder what i mean, but if you think a while you soon figure out that Microsoft are getting their ideas from other companys!

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Like Windows Internet Explorer 7 & Windows Vista these two are two very new things in Windows but: Where came thoose ideas from??� 

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Internet Explorer 7 is a copy from Mozilla�´s: Mozilla Firefox & the design is taken� from Mac�´s Safari!

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Vista is a Os whit big security problems, but whit a nice GUI and a very good DirectX 10. But the GUI is a copy of Mac�´s Os!

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So now you maybe understand what i mean and i wonder: Why can�´t Micros ...