No, I would say almost everyone who bootstraps either goes into debt or uses savings to fund the business, hoping to break even and make a profit eventually.
If you can get enough revenue from the first day to cover cost of living for even 1 person, that's a good start, but unusual. Bootstrappers who start with an existing client or product that's already selling can do that.
Also, depending on circumstances $1m ARR may be enough to cover costs for a team of 9. Many people earn much less than $100k even accounting for costs, and some SaaS don't need high operating costs (hint: cloud services are not the cheap way), or are still working their way through AWS/IBM/Google free credits.