There are so manny cases like that. As a business, you create a product that is desirable and it's only on one of your bigger products, so you have to buy the bigger product to get the smaller one that you really wanted in the first place.....it's product innovation and marketing on harmony.....you want "OnStar"....well you have to buy a General Motors product. If that kind of opportunity is removed from companies, it will reduce innovation and then just ruin/water down the original product due to cross platform issues. It could even bankrupt smaller companies. I think if governments want tp require interoperability bet brands in any areas, then they should design/devise the system and companies can sign on for a fee...if they want to do business. They could also have their own systems too, but we all know how well government mandated. operated systems work.It’s even more profitable if the user buys an iPhone to get access to iMessage.