First things first - in answer to the OP, SQ still have a full selection of drinks in both economy and business, especially long haul.
My company is on a bit of an economy drive at the moment and Air Asia / Tiger(!) / etc are being pushed, but I will always stick with SQ even though it's a bit more expensive. WHBM sums it up - dash to the airport, no dinner, all you can hope for is something half decent on the plane.
Also, my most frequent trips these days are to Jakarta, and SQ have 6 flights a day. I have almost never caught the flight back that I was originally booked on - meetings get cancelled at the last minute, the traffic's terrible and I get to CGK late, the traffic's OK and I get there early... If I do get there early, and cannot change my flight, I can go to the lounge and work, if I am on AA, there's nowhere to sit and work, so it's wasted time. By flying AA I could save the company $100, but then get a situation where I have missed the flight, can't get on another one till the next day - surely my time is worth more than $100. Well, I know it is 'cos I do the budgets(!) False economy.