I remember when 1 Megapixel cameras were considered a new innovation for early smartphones, 20 years ago.
Can't be too many years until we reach 1 Gigapixel sensors.
Resolution matters, but when are the biggest problems of today's fullframe cameras stacked, it will go like this:
0. Sensor's current electronic cleaning from dust doesn't actually remove dust,
1. Most don't have global shutter,
2. They got too small screens,
3. No automatic electronic ND,
4. No removable IR+UV filter,
5. Most without 8K recording,
6. Overheating in summer,
7. Battery doesn't last long for Pro's.
8. 5G inside,
9. Automatic/Manual lens distortion correction of unsupported and manual lens using printed chart (like to get laowa fisheye 4mm straightened).