Sounds like an airline problem, not a customer problem. The airline should ensure enough storage space instead of having customers compete for storage space. Ryan Air looks like a bad experience to me based on people saying you have to board early to get storage space.
Well it's not a problem for Ryanair if it means they can charge extra to give you a better chance of getting storage.
Ryanair isn't a good experience, but it isn't terrible either. I fly with them most of the time from the UK to other European countries, and I don't pay for any extras - usually I just pack light and only take cabin luggage that can fit under the seat. Mentally I, guess I treat it like it's a bus ride - it's not going to be fancy, comfortable, or fast, there's going to be a lot of waiting around. It gets me from A to B safely and cheaply, as long as I don't fall for any of their dark patterns.
I've never actually flown Ryan Air, but I'm pretty sure this is a perennial issue on Delta. They wind up checking people's luggage for free when it doesn't fit.
There is enough guaranteed storage underneath the seat that the lowest tier ticket guarantees, overhead sized luggage has become an extra fee for the last ~7 years.
I been on flights where they just go to the people in the back of the line and says "sorry, your bag must be checked in because we dont have enough room in the overheads". Kind of sucks when you just got carry on (because now they will throw your luggage among the checked in bags and they might damage it and you have to wait in the airport for your bag)
