Is is justifiable when sponsors are willing to pay many £millions each yeah to the most successful sides; the Glazers wouldn't pay wages that couldn't be justified. The clubs owners have decided that Wayne Rooney is worth £200k a week to Manchester United FC; that decision is theirs and theirs alone to make, it's not your decision and it's not our decision; a decent businessman will pay for an asset up to and including the value of the asset to the company, either in immediate terms or as an investment in potential. This same principle dictates wages in all walks of life, in all professions and at all levels of pay; Rooney gets paid £200k a week because he's worth it to the company he works for, that's all the justification that is needed. People on lower wages may complain that these amounts of money are extreme, but then so is the players talent; if we could all play football like Wayne Rooney then you can guarantee he'd get paid minimum wage and no more.
The sugar daddy clubs are somewhat different of course, but even they only pay a player what he's worth, except this time the value is driven by prestige and preeminence rather than profit in much the same way that fine art is oft traded; there is, afterall, more than one way to justify the value of an asset.
That's all fair, if that's that.
It's all fair, when commercial & footballing value of a player fluctuates the wages that he earns.
It's all fair, if that increase in wage doesn't make players who are inferior asking for similar amount.
If Rooney tomorrow loses all his form, and respect of world for some racist comment he made; will he lose some of his wages?
No.
You say it's companies decision, well if that were a happy decision to pay Rooney that much, then there would never have been a big fuss to begin with.
Players are taking the clubs for a ride and fans are okay with it, as long as the best players are there. Some fans they are, not caring about resources of their club.
Take Samir Nasri, for instance, what has he done to be an asset for his club to demand what he is earning right now.
Is he a global marketting asset, No.
Is he world class player, No.
Why should Arsenal then pay him 150k/week?
The problem is not of decision making, it's the problem of overall inflation of wages because of us fans, thatit can't even be argued to okayish footballers that they are not worth 70-80k/week.