Totally depends.

Lots of people assume that the valuable thing is the direct business, but a business can be a lot more than that. A competitor may buy you for your engineers or sales team or patents, or assets, or whatever (e.g. Siri, Motorola, etc)... and just toss the rest of the business or sell that stuff off after they have what they want. In other industries they may just buy companies for their assets. Also you never know what will happen with a pivot (e.g. twitter, slack, etc).

The bleak reality is if you can keep growing (making more money than you spend) that alone is usually desirable enough for people to keep giving you money and eventually provide an exit. Why? because it's really hard to do. Its a skill.