> I'm calling to tell you that we have found out that your insurance needs renewal. It would be of the utmost importance for you to renew it in order to avoid fees. Moreover, we'd like to offer you a 20% discount in order to continue our great partnership together.
> Banana Insurance
And go this:
> Hey,
> Your insurance is expiring. Renew it or pay fees. We'll give you 20% off to keep milking you for cash.
Squiggle Golf is fun! Would be great if users could opt-in to get emailed with the new level once it's ready. You can bcc all of them in a single email to avoid costs (I'm not sure if this would work).
Since you're talking about business specifically, then no it's not the best piece of advice imo. There are plenty wonderful things and works of art that nobody really wants to buy or pay money for.
You could make a really great website with a lot of cool animations, but if it serves no utility then people will probably not pay for it. Maybe a 1-month subscription or a one time payment to take a tour of the website, but that's probably going to be it. So it's not sustainable on the long-term, or in other words, it's probably not a good business.
"Make something people want" (YC's mantra) seems much more fitting for business intentions.