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PostsGlobal industry duopoly: 18 monopolistic-level duopolies dominate their respective tracks

Graphics Card (GPU): NVIDIA ($NVIDIA(NVDA.US) ) / AMD ($AMD(AMD.US) )
Central Processing Unit (CPU): AMD ($AMD(AMD.US) ) / Intel ($Intel(INTC.US) )
Networking Equipment: Arista Networks ($Arista Networks(ANET.US) ) / Cisco ($Cisco(CSCO.US) )
Application-Specific Integrated Circuits (ASICs): Broadcom ($Broadcom(AVGO.US) ) / Marvell ($Marvell Tech(MRVL.US) )
High-Speed Cable Connectivity (AEC): Credo ($Credo Tech(CRDO.US) ) / Amphenol ($Amphenol(APH.US) )
Etching Equipment: Applied Materials ($Applied Materials(AMAT.US) ) / Lam Research ($Lam Research(LRCX.US) )
IC Design Software: Cadence ($Cadence Design(CDNS.US) ) / Synopsys ($Synopsys(SNPS.US) )
Credit Cards: Visa ($Visa(V.US) ) / Mastercard ($Mastercard(MA.US) )
Credit Ratings: Moody's ($Moodys(MCO.US) ) / S&P Global ($S&P Global(SPGI.US) )
Weight-Loss Drugs: Novo Nordisk ($Novo Nordisk AS(NVO.US) ) / Eli Lilly ($Eli Lilly(LLY.US) )
Surgical Robots: Intuitive Surgical ($Intuitive Surgical(ISRG.US) ) / Stryker ($Stryker(SYK.US) )
Commercial Aircraft: Boeing ($Boeing(BA.US) ) / Airbus ($Airbus(EADSY.US) )
Coca-Cola Beverages: The Coca-Cola Company ($Coca Cola(KO.US) ) / PepsiCo ($PepsiCo(PEP.US) )
Mobile Operating Systems: Apple ($Apple(AAPL.US) ) / Google (Android, $Alphabet(GOOGL.US) )
Accommodation Booking Platforms: Airbnb ($Airbnb(ABNB.US) ) / Booking Holdings ($Booking(BKNG.US) )
Ride-Sharing: Uber ($Uber Tech(UBER.US) ) / Lyft ($LYFT(LYFT.US) )
Social Media: Meta ($Meta Platforms(META.US) ) / Snap ($Snap(SNAP.US) )
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