This is such a loaded topic, but here's a few points:
- I wonder if you can place bets against this happening. If you truly believe that civlization will collapse by 2030, then money will be of no use to you in 2030. However, if you're skeptical, you could come away with some decent winnings.
- If this is a real concern, e.g. water levels rising, destruction of housing, etc. you'd think "fat cat" insurance companies and banks would be hedging their bets. i.e. mortgage/insurance on the coastal cities (i.e. most of them) would be getting very expensive.
- The massive growth of global green house emissions in the future will not come from already modernised nations (e.g. US, EU, ANZ, etc) it will come from the 3B people in China, India, and Africa that raise themselves out of poverty by industrialising -- more electricity, more cars, more meat. Are you going to try and impose "green" requirements on these places? It seems hypocritical for the first-world nations to impose green solutions onto the 3rd world, when they're already in very comfortable positions.
- It might look like rolling out "green tech" is the answer, but what happens when you stifle the growth of the poorest parts of the world (e.g. Africa, India, Asia) by removing access to cheap and reliable fuel source (i.e. petrol/diesel), that already has a widely deployed supply chain? Are we sure that global warming is worse than 3B people living worse off for another 30 years?