Original sentence: However, today major launch markets such as Communication satellites and Satellite television are purely commercial, though many of the launchers were originally funded by governments.Most early spaceflight development was paid for by governments.Private spaceflight companies claim that much of the high cost of access to space is caused by governmental inefficiencies such as NASA paperwork , and that they are able to be more efficient and bring down costs significantly.Satellite television.Space colonization.There is growing interest in spacecraft and flights paid for by commercial companies and even private individuals (see List of private spaceflight companies.This assertion can be supported by much lower quoted costs for private space launch vehicles such as Falcon I that were wholly developed with private financing
Edited sentence: Current spaceflights are frequently, but not invariably paid for by governments; but there are strong launch markets such as satellite television that is purely commercial, although the launchers themselves are often at least partly funded by governments.If a commercial company were able to be more efficient, costs could come down significantly.It is thought that some of the high cost of access to space is due to governmental inefficiencies; and certainly the costs of the governmental paperwork surrounding NASA is legendary.Space launch vehicles such as Falcon I have been wholly developed with private finance, and the quoted costs for launch are lower.There is growing interest in spacecraft and flights paid for by commercial companies and even private individuals