For those of us old enough to remember (and others who have read about the history), Microsoft was legendary for "Embrace. Extend. Extinguish." an internal credo that became known outside the company and came to represent the ruthlessness with which Microsoft flexed its muscle in new technology markets.
Microsoft was notorious for changing the way Windows works to stymie competitors, one of the most well known of these tactical maneuvers being the integration of IE into Windows which eventually killed Netscape. That particular bit of integration eventually led to their conviction under US anti-trust laws.
Microsoft's culture has since changed. Microsoft no longer seems as interested in blocking all competitors. They are building products that leverage standardized platforms and the present-day Microsoft even meaningfully contributes to open source projects and refrains from promoting incompatible work-alikes.
In other words, Microsoft is becoming once again a formidable company, this time with the that they tolerate (and increasingly collaborate with) other companies that develop technology to benefit users.
Microsoft is discovering that being successful does not mean shutting everyone else out and for this reason they are not "dangerous" in the sense they were in the 1990s when their efforts and "success" in many ways prevented the industry from advancing.
EDIT: Readability and style.