1.
Tech giveth and tech taketh away. VCRs created Blockbuster's market; streaming and DVD-by-mail killed it within a decade.
2.
Capital structure determines strategic flexibility. $1.45B in debt meant Blockbuster couldn't invest in Total Access — its only real competitive advantage over Netflix.
3.
Great entrepreneurs know when to sell. Huizenga and Viacom both exited at the top before disruption hit, leaving others holding the bag.