The more I see dev (or company) talks, the more I see presenters using Mac, no matter what company is behind. From Google to Windows including IBM, Facebook, Twitter, etc, etc. Does this companies really use Macs for all their task work? Or is this a marketing strategy?

Is it possible that allowing Macs at a company, might improve the ownership culture inside a company as IBM is saying[1]?

[1]: http://finance.yahoo.com/news/macs-cost-one-third-much-223047938.html