Isn't the whole issue the definition of the market? That's going to be highly subjective. Are Samsung and Google phones running Android the same market? Most pe

Isn't the whole issue the definition of the market? That's going to be highly subjective. Are Samsung and Google phones running Android the same market? Most people would say yes. Are phones and tablets, or computing devices in general the same market? Most people would say no. iOS and Android? It gets murky, the cost of switching is high and fungibility is debatable.