Sony made a strategic misstep by not speccing their 33mpix sensor for full frame 4k60.
Canon then came along with the R6ii and R8 - and now has a very well specced midrange / semi-pro camera, and a similarly well specced travel / enthusiast camera in the R8.
I think this is why we've seen a flurry of parts-bin releases from Sony in recent months. Ideally they'd have just revved the a7c to a7cii using that 33mpix sensor... but that still left them exposed - so we saw the zv-e1 with a repurposed a7siii 12mpix sensor in a similar body. That doesn't have the resolution to meet general purpose hybrid / photo needs though - so they have to do the a7cii, and why not repurpose the 61mpix r sensor into a high res version?
I shot Canon for years, then migrated to the Sony r series and shot them for a good while. Most recently I owned an a7c but sold it to get an R8.
The a7c line is a nice platform as a travel camera - good image quality and the battery/IBIS gives it some handy advantages over Canon's R8. The ergonomics are brutal though; uncomfortable grip and lots of sharp edges, poor UI and low resolution screens. That's one of the primary reasons I've switched (back). The R8 is a joy to use, and very well thought out.