Whilst you can never discount this one off sparking something I would think in all probability it'll remain just that a one off.
Gilmour has been fantastically generous to charities in recent years by giving away tens of millions, he's had several digs at people like McCartney to match his donations.
Waters is too very interested in human rights etc. and probably remains friendly with Bob Geldof (they worked together on The Wall movie and got on well).
This cause and these factors have probably been the main catalyst and not a desire to make music again.
Gilmour has been fantastically generous to charities in recent years by giving away tens of millions, he's had several digs at people like McCartney to match his donations.
Waters is too very interested in human rights etc. and probably remains friendly with Bob Geldof (they worked together on The Wall movie and got on well).
This cause and these factors have probably been the main catalyst and not a desire to make music again.