1. It would be silly for me to increase my investment, even if I think it is a great investment. I stated earlier that $5 million wouldn't dramatically change my life but it isn't pocket change for me either. For diversification reason alone it makes no sense for me to further concentrate. A better argument would be to look at people with smaller stakes in Steem and see if they invest more. As I see it, many have, but you pointed out earlier that it could be fake. I can't conclusively refute that, so I won't try.

2. Buying Steem/SP is not investing in a company, it is investing in a blockchain token (rhetoric about DACs/DAOs aside). Such a decision needs to be made based on an assessment of the prospects for the value of that token, which may be related to the prospects of the Steemit corporation, but are not identical. Your assessment is obviously negative. Mine is more neutral to mildly positive but not so positive I would double my already significant investment, and I also would hardly be surprised if it failed completely.