Im not arguing that it wont be a $20 bil market (or more) at some point. I think it will too. My argument is simply that you cannot take ISRGs numbers and apply them to Titan. The market dynamics are changing considerably.
Btw, "new investors" for the sake of this argument is made of people currently not invested in the stock market, not an investor moving money from one sector to another. Please go back to the start of this discussion.
And Titan's rise will not create "new investors!" Some money will move from companies outside the healthca(re sector but Titan stock will make its biggest gain from companies within the sector. When Titan starts its true ascent, good chance you will see ISRGs (and others) stock drop. Wait and see.
To your point about Amazon, check their revenue. Amazon doesnt make a significant annual profit because they continually put money back into the company.