Can you name 10 founders of companies from more than 1,000 years ago? I cannot. Additionally, there are only a handful of companies left that were founded more than 1,000 years ago [1]. Therefore, it's unlikely that any founder or company will be remembered in 1,000 years.

If I have to make a wild guess what will be remembered in 1,000 years, I would guess that SI units with its derived units will still be in place. [2] These (derived) units are named after some inventors, James Watt, Gustav Hertz, Isaac Newton, Nikola Tesla, Lord Kelvin. Maybe some of them will be remembered in 1,000 years. But keep in mind, 1,000 years is a very very long time. A lot can be forgotten in that time span.

[1] https://en.wikipedia.org/wiki/List_of_oldest_companies

[2] https://en.wikipedia.org/wiki/International_System_of_Units