Solas is Lenin (a revolutionary but with a comfortable upbringing), to Sera's Bakunin (who also had a comfortable upbringing)... In fact most revolutionaries had a middle/upper class background.
What Solas doesn't seem to realise and perhaps IB does, is that if he is ultimately successful, he might well end up with something resembling... the Qun...
Right, because to succeed as a revolutionary you have to be well-educated, charismatic etc. Moreover, the oppressed rarely have a moment to stop for a moment and think about how oppressed they are. Also, they lack resourses and connections *shrugs*
Well, being amongst the few who learned to write and read at that time kind of helped too... Btw I don't think Solas is against a stratified society; he's more against the upper classes being complete douchebags.
I definitely think he was upper class in his time and with a taste for fine things. I'd love to see him in his Arlathan style, I just hope it doesn't have anything to do with his choice of hat for the Winter Palace.