A few other thoughts here.
Firstly, I hope there will be a way forward for the staff at Bordeaux, either continued employment in the amateur leagues or moving on to something better. It's a horrible thing to see a business go under and take its staff with it. I also hope they've been paid this month - but sadly I wouldn't be surprised if looming the wage bill is what's driven the final decision here. I expect most of their players will find employment elsewhere so it's the support staff that I would worry about.
Secondly, whilst it is unquestionable that a by-product of FFP rules is to consolidate the power base of the big clubs and make it harder for other clubs to break the monopoly, what's happened to Bordeaux underlines that there is a need for some form of regulation on spending. The French FA should be taking a long hard look at themselves to understand how they allowed this to happen.
Thirdly, clubs need to be realistic about their potential achievements. Bordeaux had, presumably, put in a cost structure which relied on them remaining in the top tier and benefiting from a decent media deal. When both of those things were taken away, there was always a risk, even an inevitability, that they would spiral out of control. If we look at the clubs in FFP trouble in the Premier League, unrealistic expectations always form a part of it - Everton were expecting to make their way into Europe and spending to achieve that, Forest went crazy buying players to strengthen their squad for an assault on (comfortably staying in) the PL, Leicester had a couple of good seasons and kept spending like they were a top 6 club before getting relegated, Villa went a bit transfer crazy, possibly assuming they'd be able to sell a Jack Grealish every couple of years to sustain it. Don't get me started on Chelsea. They may have circumvented the FFP rules with accounting trickery but they are still leaking cash.
None of these clubs had a plan B for what they would do if it all went wrong. Clubs need to understand that failure is a possibility, relegation is a real threat, and they have to have contingencies to manage that.
Earlier this year I remarked that our accounts had stood up really well to a year of under-achievement, in part because we had built a bonus-driven wage structure that would adjust to that, and also due to strong commercial revenues and our ability to sell out every game. Last season will have been a further challenge with no Champions League revenue. But I know the club plans based on realistic expectations, which it often exceeds, rather than taking risks on phenomenal success which, most seasons, is out of reach. So, for example, when we do our financial plan, we might assume progress from the group stages in Europe, but not much beyond that. We might expect a top 6 finish in the league, but not top 4. We plan for a realistic down-side outcome, rather than assuming we'll do the Quad (that's just for on here).
Clubs like Bordeaux need to learn that lesson, as do the PL teams I've mentioned above. In some cases, that means a patronising "know your place and don't get ideas above your station". Success is a long-term goal, build up bit by bit.
By contrast, teams like Burnley or West Brom tend to deal with the promotion / relegation yo-yo cycle, because they accept that it is a realistic outcome and plan accordingly.