I never understood why there would be a large demand for a single-purpose device like this. How long does it take to vacuum? If you can't do it, hire an occasional housekeeper.

How vulnerable is your technology to copying by the people in China crushing other industries?

The people who prohibited Amazon's offer to buy the company obviously didn't understand the market or future trends. Typical European bias against American companies and cluelessness about China:

"European regulators moved to block the acquisition in January 2024, citing concerns that Amazon could squeeze out rivals by restricting marketplace access."