Is there a cost for it though? They don't carry cargo when someone chooses not to buy carry-on baggage right and they don't charge people per kg anyway. It's n

Is there a cost for it though? They don't carry cargo when someone chooses not to buy carry-on baggage right and they don't charge people per kg anyway. It's not even like one of those tricks for upselling as for most people 0 baggage doesn't make sense and it turns into a hidden fee. So I guess they will increase the prices of 20 + 40 tickets to 50 to compensate for all the lost cabin baggage sales and some people will be really upset that they can't have the 20 tickets anymore. Meanwhile people will be able to compare the full cost of their flight with the cost of a train or bus alternatives. IMHO they should make it compulsory to display the minimum cost of transfer to the airport. Often those 9EUR Ryanair tickets actually cost 100EUR+ because they fly to airports that don't have reasonable transfer options and you pay multiples of your flight for transport to and from the airport. When you put in all the costs you realize that 9EUR plane tickets is more expensive than 100EUR+ train ticket.