I think the rich guy would prefer to invest in a company that produce ASIC instead of buying Bitcoin, they would earn even more using this strategy.
Buying Bitcoin is the safest investment in a lot of ways but no, a rich person wouldn't touch Bitcoin yet. The ultra rich want to buy control and power over others.
Bitcoin companies aren't run in a way which would give them much control over the community yet. In the future that could change if the community depends too much on Bitcoins and does not diversify into altcoins.