Is UNIX still sold?

I'm curious to know, is UNIX still a product that's being actively sold and marketed to potential customers? I understand that it's been around for quite some time and has a strong reputation in the tech industry, but I'm wondering if its popularity has waned in recent years or if it's still a go-to operating system for businesses and individuals alike. With so many new and updated operating systems available on the market, I'm wondering if UNIX still holds its own in terms of sales and demand.