I just visited Borrelli's Palm Beach boutique last week and IIRC collar selection for MTM is limited to around twenty stock collar styles with no modifications to spread, stand or leaf. Sounds more like MTO.
Did you bother to ask about how they do their MTM program before concluding that it's MTO? Have you ever tried the program yourself? Your conclusion is premature and presumptious.
First of all, though Borrelli won't individualize a new collar shape for you, neither will most MTM programs. They will, however, cut and scale the collar to a specific width that is not available on a stock collar: my collars are cut to the quarter-inch since I fit between stock sizes. Furthermore, 20 collar styles is a
lot of collar styles for MTM: who do you know that offers more?
Second, I can assure you, Borrelli's program is MTM. They have several body styles that can be tweaked here and there. For example, my shirts have a wider chest (by 2 inches) and narrower waist (by 1.5 inches) than the stock template. A MTO program would require me to stay within the boundaries of a given shirt body--no fabric could be 'added' to increase the chest width. Thus, the shirts are not modified after manufacture, but during manufacture, before arriving at the store. Needless to say, the shirt is also cut to the right length, as are the sleeves. Collars are not simply stock collars but cut to a specific measure, as noted above. One can specify whether they want gauntlet buttons, the degree of desired shirring at the arm, cuff, and yoke, the pleating format at the yoke (single, box, or none), and cuff style (made to whatever width is specified). These are but some of the options available.
A good example of MTO would be the program that Charvet runs out of Bergdorf. They have stock body templates that they will not alter in any way. They have, I think, 4 or 5 collars to pick from, and there can be no tweaking of measurements. To Charvet's credit, they do not misrepresent this information at all, and in fact recommended Borrelli when they realized they would not be able to fit me properly.
Please don't post bad information about things which you do not know of that then require lengthy responses to clarify the matter in your wake.