Source: hello engineers blog
The design and usage of the wireless computers needs a specific frequency band available for it. Everybody knows that the Radio Frequency spectrum is not a free commodity and it’s being governed by specific bodies to avoid its interference by irresponsible users. The other reason is that particular frequency bands can be allocated to specific services. Due to the importance of some offered services, a given frequency band, treated as commodity, may be worth of billions of dollars when auctioned by a government to competing bidders (companies).