I'm in a large company myself, but I've never seen another trans person there. Of course when I told them I was transitioning, they acted like all I was doing was changing my retirement contribution, like no big deal. There are probably several more like me in this company around the world that I've never and probably will never meet.
I really don't think the percentages of the population that are trans are accurate. I think they're accurate based on current information, but I think we make up a much larger percentage of the population than people think. I think there are lots more out there that just haven't had the courage to be known yet. I know if I hadn't done it when I did and saw the news these days, I'd be terrified of saying anything. Although the news makes it sound a lot scarier than it is, at least where I live.