It's impossible to comment directly on your analysis without many more metrics. But, suffice it to say that it all depends on the value of an employee (and I do not mean personal esteem, but the value of their time) and the productivity you expect on arrival. If an employee works all day, flies TATL to Europe, landing in the local AM and you expect them to accomplish sophistcated work, the value of F/J is self-apparent. On the other hand, if you send them a day early or at least on a daytime flight, you lose productivity, but they are rested (although you've paid to keep them on the road).

To me, time is money. Some of those on this thread apparently have jobs where there is a point where they get their work done and that's it. Many always have more work they could do and generate revenue. Recline or not, it's hard to accomplish too much in Y and more than possible in F/J (somewhat overbroad depending on exact configurations).

One also has to look at cash outlay. Clearly J costs a lot more than Y and it has to be paid for in cash upfront. While it may be revenue-enhancing in the long-term, that doesn't help this instant's operating budget. Thus, the soundness of the company and ability to make investments such as J matter a great deal.

Finally, it's not a good analysis to say that the money used for J could be used to pay an employee a bonus. That is true and there are many employees who are strapped and might jump at that. But, from the business perspective, it may not be a good deal. Sort of like offering someone the value of a laptop if they are willing to go without. There's some who would be happy to give up the laptop. But, it's not likely in the business' best interest.