I think that we offer a unique position amongst 'the bigger teams' in the league for players like Walcott and Sturridge, others that may be tempted to look elsewhere for first team football. Sinclair, like Moses have made the same sort of decision Sturridge did and appear to have gone where the money leads. That same issue of money also means that the clubs they have chosen can buy in much bigger name players and they find themselves without a realistic chance of regular first team football.
They may get a League Cup run-out or an appearance in a dead rubber in the CL but they will just be eating expensive crumbs.
Even Arsenal and Spurs have reasonably well stocked squads (in comparison to us). As we're looking to re-build then players have a chance to grow and develop with us (hopefully) and though there may not be signs of CL football, going down the route of going to the Manchester clubs and Chelsea only means you probably get to watch it for free, participation is hardly nailed on.