From $1 million to $100 million?

[Robert C.]

There's a question I've been wanting to put out there for a while now. There's a ton of information out there for "getting started" in real estate, and "becoming a millionaire", etc. There's not much literature about going from $1 million to $10 million, or $5 million to $50 million. 

The underlying assumption seems to be that if you got to $X million (whatever number that would be considered A LOT), then you should be smart enough to grow that wealth even bigger. But are there specific efficiencies you can exploit to grow your net worth faster? Are there higher return investments you can tap into that you couldn't before? Maybe it's all about having refined your processes that you've built over time, so that you can better utilize your cash-flow? 

Do the rules change as you accumulate more $$$, or is it just rinse/repeat all over again?? Just looking for some perspectives from the community and an interesting discussion.