Even if we assume that under the table deals we were involved; one must keep in mind that market conditions under which the old contract were signed were quite different 20 years ago. We are comparing a time when oil was the 'king' to a time when oil especially gas is cheap as dirt. LNG price in Asia was then around $12 per mm Btu now it is less than $5 due to cheap Australian production.
Natural gas was selling at Henry Hub(USA) at close $7per mm Btu in 2006 now it is hovering a little above $2/- Cost of Solar (Photovoltaic) power has dropped from around 7 cents/KWhr to under 4 cents due to a sharp drop in the Chinese PV cell prices.
However, per my info, most of the plants that have in principle agreed to the terms were established 15 to 20 years ago and the old contracts were about to expire soon. Additionally, this is only an MOU, we have to see the actual agreement to really understand what is new. Regrettably, I don't have sufficient information about the new terms to write a more definitive post.