Can't say that corresponds exactly to my experience, EB. When I could go regularly (i.e. late sixties, right through seventies, until, basically, I changed countries, and then continents for a while) I can't remember ever being turned away from Maine Rd. I always got in on the gate. Even for derbies. And for a while, through the schoolboy gate where it was 2s/6d (or half-a-crown, which is a term you'll understand!). That was the team of Young, Bell etc, and then later the team of Watson, Tueart, Barnes etc., so not exactly charlies. It was good football. Like you, I never thought of getting a season ticket a) because I couldn't afford it at first, and b) because I never felt I needed it. Even taking account of inflation, paying £60 today for a decent seat for one match is a whole level up. Ok, it's fifty years ago, but still.
The experience of going to a football match in 2024 is a whole different level of comfort. I never once used the toilets at the Kippax because I didn't want to go through that gnarly experience (didn't even know where they were!). I held it in, simple as that.
The evolution of football has left the segment of our support which is still definitely working-class (however you define that term) behind. I actually think that prices at City are reasonable if you compare them to most other PL clubs. I won't even talk about the London clubs. But there are plenty of poor people around Greater Manchester. And some of them were match-going blues. They've had to give up. That's just a fact.