1.
Don't starve your champion. Warner pulled cash from Atari to prop up other divisions right when reinvestment mattered most.
2.
Talent isn't interchangeable. Casar treated programmers like factory workers — they left, formed Activision, and captured 30% of Atari's cartridge market.
3.
Quality control is your moat. Flooding the market with terrible third-party games destroyed consumer trust and crashed the entire industry.