The Sega question is an interesting one. When Sega bought Data East, they dumped a bunch of money into R&D. That's the only reason we got the big display. They also spent a lot of money upgrading art work printing process for the cabinets. If you look at the first few Sega games with the bigger displays the cabinet art is nicer then games data east were doing. While Maverick and Frankenstein were simple games both had some neat toys. Baywatch and Batman seemed to be showing some real promise. Apollo 13 was as packed as any game. Then they cut back on back the funding and the games got less innovative. The showcase cabinet was the last effort to elevate their games and make them stick out. Shortly after stern bought them.

Now to answer the question, looking at games like Space Jam, ID4, JP lost world, etc., these games were being sold new next to games like ToM, TOTAN, MB, and MM. Even at $500 less, no one was buying Sega games unless they had large gamerooms to fill.