Original sentence: It could also make it impossible for the user to read or modify his diary except as specifically permitted by the diary software.Many computer security experts disapprove of TC, because it could allow computer manufacturers and software authors increased control to monitor and dictate what users are able to do with their computers, and there are significant concerns that TC would have (or may even covertly be intended to have) a crippling anti-competitive effect on the free software markets, private software development, and the IT market in general.They argue that this makes new anti-competitive techniques possible, which may hurt the people who buy trusted computers
Edited sentence: It could also make it impossible for the user to read or modify his own diary except as specifically permitted by a diary software.Most leading computer security experts disapprove of TC, because it would allow computer manufacturers and software authors increased control to monitor and dictate what users are able to do with their computers, and there are significant concerns that TC would have (or may even covertly be intended to have) a crippling anti-competitive effect on the free software markets, private software development, and the IT market in general.They argue that this makes new anti-competitive techniques possible, which will hurt those people who buy trusted computers