Other companies such as marketing their products to increase sales and usage. Just like Bitcoin Marketing is required to inform Bitcoin about the scope and practical aspects of the world.
In order to market Bitcoin I think it needs to be owned by a corporation as they will be the ones handling the promotions and overall marketing if there is no company owning BTC then I don't think there is any sense to what you are talking about. BTC is considered a currency it is not like Paypal or Western Union where they can market their products. If you want BTC to push through in a global scale we must need to ask our government's support in order to make it happen by way of legislation, other than that the most important thing is us being the demand itself.