There are multi-million dollar businesses that run entirely on content + SEO (eg https://sleepopolis.com/).
Yes, you are taking on a big platform risk in that your business depends on Google continuing to serve you high amounts of traffic. Does that mean "you will go extinct one way or another", heck no.
Risk management is a big part of building a business. Just because there's a low chance that you could lose a significant chunk of your revenue overnight doesn't mean the business isn't worth starting.
Every company has risk (AWS, Stripe, npm, etc, etc, etc).
The opportunities to start businesses like that are shrinking every day, by design, by the way that search engines are supposed to work. There is more content produced every day, some of it very good, and there can only be one (1) first page of search results. Your doom is essentially guaranteed. I'm not saying it's impossible, I'm saying it's just not an innovative or forward-thinking field to get into. The only way this risk would not exist is if search engines were inherently corrupt and you had some reverse engineered way to rank at the top. That ship sailed 5+ years ago[1] when the top search engines switched to machine learning.
Yes, you are taking on a big platform risk in that your business depends on Google continuing to serve you high amounts of traffic. Does that mean "you will go extinct one way or another", heck no.
Risk management is a big part of building a business. Just because there's a low chance that you could lose a significant chunk of your revenue overnight doesn't mean the business isn't worth starting.
Every company has risk (AWS, Stripe, npm, etc, etc, etc).