The video is mainly about an expected announcement tomorrow (1/26/21) from Sony about a curved sensor in a fixed lens camera. This gets around many problems in terms of going to a somewhat "curved" sensor. However, this is not really my point in posting this.
My primary point here is thinking about Pentax sliding into the future. If indeed Sony follows through with their announcement, there is still a lot of engineering and innovation that is necessary to adapt and apply this to interchangeable lens cameras (ILCs), but in terms of Pentax's business/R&D plans - why make a series of product changes - dslr to mirrorless (which requires a new lens mount and family of lenses) to possibly a curved sensor based product set, which would again necessitate a set of lens designs. They could very well follow Sony's lead with the GR product line - and as the technology and manufacturing capabilities matures (yields increase) - have a new lens design family set waiting in the wings and when ready take the conversion path - be it late, but not be forced to take multiple leaps as others may be doing sometime in the future. We just might be seeing why Pentax has been somewhat resistant to moving away from a dslr centric product line.
I'm not expecting this technology to be ready for an ILC tomorrow (or anytime soon) - that is going to be sometime in the future. The point is, that curved sensor migration closely following the industry's mirrorless migration, all following the ILC market collapse (due to smartphones) - is not financially healthy. Just thinking out loud. The point is surviving and managing the ever changing technology landscape.