People have been asking for iCloud macOS backups since iCloud was introduced. It would be very popular. I'm not sure why Apple doesn't offer this, because it's easy revenue.
Because people will fill their iClouds. An important value proposition of iCloud is that customers pay for more space than they need. Time Machine grows to fill all available space.
Because people will fill their iClouds. An important value proposition of iCloud is that customers pay for more space than they need. Time Machine grows to fill all available space.