A company with a goal of making revenue and dividends is a normal company (or 'a website' in some cases). It may be a large company or a small company, growing or shrinking - but not a startup.
A company with a goal of making huge (not 100%, but 100 times) growth is a startup.
100k company aiming to be a 200k company is not a startup;
100m company aiming to be a 200m company is not a startup;
100k company aiming to be a 200m company is a startup;
0$ company aiming to be a 200k company is a startup.
IMHO. Does it make sense?
P.S. and it is often determined by the actual business ideas. There are some ideas that can grow and scale if everything goes well; and there are some ideas simply that have a market ceiling of, say, a few million even if everything goes perfectly.
Think about the word "startup." The etymology of the word means, literally, "start up [business]". A new company that has yet to prove itself is a startup. The Merriam-Webster definition is "a fledgling business enterprise."
If that's not a startup, then calling what you're referring to "startups" is very counter-intuitive.
It's as if I had referred to a recently founded car manufacturer as a "new business" and then subsequently everyone started referring to 20-year-old car manufacturers as "new businesses."