An increase in exit activity would allow general partners to provide limited partners with long-awaited liquidity, enabling them to recycle capital back into new PE funds.
One of the key technologies that is needed is a means to recycle water from astronauts back into a drinkable form, along with radiation shielding and developing ways of working and living in space for prolonged periods.
Water purification plants (especially in large cities which recycle their sewage waste right back into the drinking supply) will hopefully get prioritized for energy allocations when rationing starts.