It's a very complex subject!
Scotland's property laws have been altered on several occasions, the most recent of which was back in 2000, as detailed in the Skyscrapercity thread, so the "feudal" nature of the system no longer exists.
However, if we look at the social impact, all I can say is that although the same forces were active throughout Scottish urban centres in the 19th century, something peculiarly toxic seems to have germanated in the Glasgow area. One theory that I have heard is that the later stages of the clearences in the Highlands were actually used as a mechanism to force people to migrate, specifically to Glasgow, in order to provide the work force needed for the Clyde Valley's industries. In addition you also had large scale migration from Ireland to Scotland during the same period. So you have two sources of population who have no real love for the ruling classes gathering in the same area. Add in the traditional poor management/worker relationship which still afflicts the UK, plus terrible housing conditions and you have a pretty nasty brew so it can be argued that the
Red Clydeside movement was an inevitable result.
Mike.