I know others here have complained about it as well, but it is seriously frustrating me lately. I am a bigger guy than what is typically designed for by the makers we discuss here. And the thing is, I'm not that big a guy. I'm 5'11", 215 lbs. I wear 36 waist, 30-32" inseam pants. Since I do have broad shoulders and a bigger upper body I usually wear XL in shirts, sweaters, etc. but can occasionally get a L. Dress shirts, usually a 17-35. Sportcoats I take a 44-46R. That does NOT sound so out of the ordinary to me, but it is SO hard to find well made clothing in those sizes at decent prices that FIT well. I have been fawning over Prada dress shirts and a cashmere turtleneck by them for weeks now... but I know to not even try them on, way too trim. Most dress shirts in my neck size have a 34 inch sleeve, too short for my tastes. Suits? The toughest of all due to the 10" difference in my waist/chest. Can't afford to have trousers recut every time I get a suit. Maybe I am preaching to the choir, and every size and shape has similiar gripes.
You and I have about the same problems. For me, just getting the trousers taken in doesn't solve the problem, as I have a 36 inch waist, but my thighs and butt are big, so if the waist fits, the seat and legs almost certainly don't. Also, a typical 46r jacket fits in the shoulders, but otherwise is too big on me. Go bespoke. This is what I did. I was amazed at the difference that a suit that was made for my body makes. I will not buy an off the rack suit ever again. No amount of tailoring makes my off the rack suit look as good as my bespoke suits. I have a Kiton suit, off the rack, expertly altered by a competent tailor. It does not look as good on me as my WW Chan bespoke suit that cost 1/3 as much. I am now a believer that fit is everything in suits. Until lately, I thought that an off the rack Canali was as good as I was going to get to fit my body type. (they have a somewhat trim cut compared to many other brands I've tried, and look the best on my frame of any off the rack suit). Bespoke has changed my mind. For casual clothing, I've found that some of the larger catalog retailers (such as Lands End) have a better mix of sizes and cuts, such that I can usually find something that either fits or can be altered to fit. They tend to carry casual clothing in mixtures of short, tall, slim fit, relaxed fit, etc.