Ryanair have consistently achieved a very comfortable total average yield per passnger uplifted, better on some routes than full-service airlines.
So have many other budget airlines.
The major costs of operating an airline are pretty much the same for budget and full-service operators; savings are only possible at the margin where overheads, marginal passenger services like catering, Personal Assistants (for blowing noses), fancy offices and Directors' perks are found
The only difference lies in the different ways they describe the total fare paid by their passengers.
So forget about whingeing about "rip-offs" etc; just be grown up, add up all the charges and compare the total with other airlines' total charges.
And have a good laugh at people who take the miniscule headline "fare" seriously.