I like this point - going for an arbitrary number like 1 billion is ridiculous. But I'd like to add if you have a $25 million company, you probably have the re

I like this point - going for an arbitrary number like 1 billion is ridiculous. But I'd like to add if you have a $25 million company, you probably have the resources and the smarts to grow into other related spaces. You might be worth 1 billion in 30 years assuming a 15% growth rate. Not entirely unachieveable, but you will be kind of old.