They'll survive. It is common to overvalue yourself when leaving the company but the reality is the company will adapt just like it always has and if it doesn't

They'll survive. It is common to overvalue yourself when leaving the company but the reality is the company will adapt just like it always has and if it doesn't it would have died even with you there from choices that didn't allow it to adapt. Just accept the offer and move on. It is the best thing you can do for a company like this.