Seems very unlikely to me that parallels can be drawn from the past to the present in that way. Markets go through different phases.
At least three social gaming companies I know of will be, or already have, hit $50m in revenue in their first three years of business.
I was using the data that was available from the article linked, which means it's the largest 100 public software companies, then segmented by type. Which meant, any individual category had roughly 5-8 companies with which to sample.
In the entertainment category it was Activision (4 years to $50m), Electronic Arts (6), Take-Two (6), International Game Technology (10) and a few others.