The Tax & finance arrangements on these aircraft are complex and you will rarely see the name of the private owner on the register - it is more likely to see a holding company which can operate as an umbrella for charter work and also the owner can then also pay an hourly rate to the holding company which is efficient for tax purposes (i.e. treating it as a business expense).
I can't imagine anyone has ever actually profited from such arrangements as far as chartering out on an AOC is concerned though - it may just go some way to offsetting a little of the cost and make the holding company seem more viable to HMRC