Yes, indeed.
But in defence of my drunken self, there is previous precedence to suggest that wholly British F1 teams eventually do fall be the wayside and join the great graveyard of former F1 teams; full of the great, the good, the mediocre and the downright laughable. The likes of BRM, Cooper, Tyrrell, and Brabham have all joined the annuls of F1 history and Williams may well join them soon. We're witnessing the demise of a once great team right now. They're tumbling down the constructors standing, they haven't got a major sponsor, their liveries are becoming ever increasingly sparse, they're resorting to pay drivers who (and no offence to Senna or Maldonado) the Williams of yesteryears wouldn't have even looked at. Did anyone in nineties ever see this happening to Williams? Did anyone doubt Sir Frank Williams, I think not.
I feared them in the nineties, but now I pity them and yearn to see them at the top again. If it can happen to them, it can happen to McLaren. When the inevitable happens and McLaren part ways with Mercedes for good and partner with another engine manufacturer or create their own engines and if they suddenly find themselves in a situation of prolonged uncompetitiveness, what then? Will they ride the tide or will this create enough discord for their major sponsors to leave and then their other sponsors too. Then with less money and less exposure, will the great drivers of the future see themselves driving for McLaren? Will they even be able to attract those kind of drivers? From that point on, it's a downward spiral that many have experienced and failed to do anything about.
Only one team seems impervious to this; Ferrari. Could McLaren go twenty years without a drivers title and still attract the kind of drivers and sponsors that Ferrari did during that era? Would they survive? I have my doubts.
McLaren are bucking the trend right now, but they must be careful especially when the time comes when Ron Dennis hands over the reigns of power of the McLaren Group to whoever he's grooming for that position.
I've rambled on long enough and taken the worst case scenario at each juncture of my argument, but I'm sure you can see where I'm coming from.