It's possible Alf, but annual upgrades were always part of DXO's MO and there were always two versions of Optics Pro.
Adobe have now gone full on monthly subscription, with even LR no longer being available as a one off licence purchase.
As for the future of Nik, I, like Paul bought a licence before it became free, but that was two owners ago, so probably not worth the little heaps of magnetism it is stored in. What DXO will do with it I don't know. And I don't suppose they have decided either - it is a French company, after all.