I take a more sobering view.
I would argue 1-3 are closer to cash return businesses and only 4 can arguably be a reinvestment/growth story.
I own tobacco and O&G - the thesis for both is similar: the market is pricing in a faster terminal decline than I am. But there is not really growth, and I would be a seller when they are valued closer to a market multiple.
Gambling, I haven't done much research there so I'll reserve comment
China - You have compelling valuations and potential for growth with China. I am dipping my toes here (partly based on your posts!). In a future where the current political risks are overblown, it looks like a good bet. I am betting a political status quo is more preferable to open, direct hostilities.
But still, difficult to argue against other faster growing areas of the global economy that will probably continue to grow: Technology and healthcare are two that come to mind.