It doesn’t have to mean that. I don’t know anything about their specific situation; does anyone here?
Sometimes when a company’s owners decide to sell, it is because they are facing cash flow problems. They might be facing the possibility of laying off people. This could be an option chosen to keep the team together.
The buyer will be taking on the responsibility of supporting the studio. The buyer will consider the (giant) buyout package and the ongoing financial support to be an investment with the expectation of future profits. Respawn enters this arrangement with full knowledge of that.
What worries me: when that much money is being spent, it shows how high the bar is set for those expectations. Respawn will need to produce very successful games, consistently, or they will test the new owner’s patience. It’s a challenge for any company to do that, though it’s what everyone strives for.
Staying independent, and solvent, that’s a challenge too.