I was in Iran from before their revolution started, through it, and a year afterward. I then spent a further three years there 25 years later. What struck me during the revolution itself was the simplistic approach of those who supported the move and I spoke to: A lot were thrilled by the promised prospect of X million/billion (in any currency you care to choose) that the upper echelons were said to be swallowing becoming available to be divided per head of population once they were thrown out - I seem to remember tens of thousands of dollars p.a. for every man, woman and child being asserted. Most of the rest were motivated by vague concepts of us-and-them matters where the government and their nearest were placed in cahoots with foreigners to bleed the country for their personal gain. Conspiracy theories and quite outrageous word of mouth ones boiled furiously in pre-social media times. Strictly speaking, there was very possibly/likely some truth somewhere in parts of this. The process was horrendously brutal and the post-revolutionary reality was dramatically different from what pretty much every member of the ordinary public expected.
On my more recent visit I found much what I expected, widespread cynicism, disappointment and disrespect for "the system" - by the word "respect" I mean its fundamental meaning, not the one that is a synonym for "fear". There was, and I believe still is, no substantial mood for a counter revolution - it was too painful last time and is still remembered, plus the present ruling class has power firmly in their grip.
Although my chances of surviving to witness 25 years of post-Brexit are slim, it would be interesting to be able to make a comparison and discover whether everything has gone as well as was/is expected/promised (by Brexiteers). Also, a fascinating unknown today is whether the UK's physical position in Europe will then be reflected in its socio-political position toward and compared to the strikingly more integrated/united Europe which is proposed/expected to come about. Will the UK, if it then still exists, be an island in every respect, defiantly separate, uncooperative and different ? Better is by definition different, different need not at all mean better.