I have released works under copyleft licenses and am not OK with Microsoft using those for profit without respecting the license (e.g. without opening up the models derived from copyleft works) when Microsoft themselves have been going after others copying their works when that benefited them. They shouldn't get to have it both ways - either we reform copyright or everyone should be required to follow it. If anyhting, large corporations should be subject to stricter enforcement since they already can benefit more due to their size.