Mr Edison is famous for "the lightbulb" (actually, "a"), but what he really did was lightbulbs + power stations (through General Electric).
Mr Birdseye is famous for frozen fish, but what [the company who bought his patent] really did was frozen fish + freezers in supermarkets.
The joke about the first telephone being the hardest sell (because there's no-one to call) has another problem, of no phone-lines, exchanges or (today's) cell-towers.
\muse I wonder if a solution to holes/monopoly abuse is to ease entry-to-market? The standard incumbent response is to deny oxygen to entrants, by giving great deals at the low end (like today's "free tiers"). Though, historically, regulatory capture instead raises barriers to entry.