[cairns]

Sammy nailed it.

So did Tabs with this:

I think Bezo's, Gates, Musk, Zuckerbug, all fit the same bill of goods as Holmes.

And berratafan with this:

it's fairly clear that too many judge greatness by the size of something that was done and not the benefit it gave.

The two great tech titans IMO were Thomas Watson Jr. and Steve Jobs. But if we mean men who are alive today I would pick people like Roger Penske and Bob Dylan. Musk and Zuckerberg et al aren't even in the same ballpark.