The driving reason behind your ticket being near impossible to cancel is because most airlines really would rather you don't, so they make it as inconvenient as possible. They will often charge double standard fare prices for 'fully refundable tickets' (that incur hidden fees) and hide the intricacies of cancellation deep within the fine print. So why are Airlines so reluctant to let you cancel, even if you aren't planning to show up for the flight?
1. Fraud Protection: Airlines have security protocols to prevent fraudulent claims, which may include verification processes for cancellations to ensure that they aren't illegitimate.
2. Regulations: Many airlines are beholden to regulations regarding cancellations and refunds, especially within a certain timeframe after booking. This means there is a lot of corporate red tape to claw through before you get your refund.
3. Revenue Management: Airlines carefully manage their revenue through pricing strategies and seat inventory management. Allowing easy cancellations after the first 24 hours may impact their revenue projections and seat availability, so they try to avoid this happening at all costs.