RFP is in a highly cyclical commodity business.
Stelco is in the same type of business, but they are slightly better positioned by having a cost-advantage. However, it's unclear how long that'll last.
BB's technology faces numerous competitors and obsolescence risk.
In the long-run, with large capital base, FFH needs to invest in the equivalent of BNSF & See's Candy to leverage their float instead of trying to hit occasional home runs.
That said, shares are cheap & investments are doing well, so you can still make money in the short-run, but might not be a great long-term holding.