Thanks for your response. You are correct about print manufacturers. I have an old HP Laserjet Pro MFP M29w. It never did scan. After I updated to Big Sur it stopped printing. Because it is out of warranty HP refuses to supply software updates. As a result, a perfectly good laser printer with new toner is useless.
So I bought a new HP Officejet 9015e. It printed and copied fine but would not scan. After 2 hours with HP support (since it has a new warranty they allow phone calls), they couldn't find a solution. After another hour with Apple we concluded that the only way to scan with this new HP was to use HP Smart. It is terrible software. After a second call to HP they finally admitted that Mac Image Capture would not work because HP wants customers to use their proprietary software. There is no work-around. When I suggested to HP that my only option was to return the printer the guy hung up on me. I called back and got a more cooperative customer support person. But after we tried a couple of failed workarounds she agreed that if I kept the printer I would be reduced to HP Smart. So I'm sending it back.
Now I am in the market for a laser printer/scanner that is compatible with Big Sur Image Capture. I will avoid VueScan because I insist on using Image Capture, a very fine and useful scan software. Thanks for your time.