At risk of been shot down...
El G...you have said it yourself in your quote...unreasonable or unjustified...
Why do I believe you are unreasonable...
You booked a ticket (had a contract) with RYR to transport you from ACE - MAD (at a guess)
You booked a ticket (had a contract) with EZY to transport you from MAD - EDI (at a guess)
Did RYR transport you from ACE-MAD? From what you say yes they did, so contract complete
Did EZY transport you from MAD-EDI? No they didn't because you broke the contract because you failed to show up at the gate on time
Just to recap...
RYR transported you from ACE-MAD as per contract with them
EZY could not transport you from MAD-EDI as you failed to comply with your contract
So in short neither of their problems as you have been probably told by gate staff, ticket desk staff, and at a guess customer services. Both airlines upheld their contracts on their side.
What you failed to do was take out a contract (book a ticket) with an airline that offers connections...Iberia and BA both allow you to book tickets via somewhere from ACE-EDI. You had that option, you did not take it.
Why as all parties except yourself complied with the contract, do you feel that you are entitled to anything?