They won't. That design is way past vogue, and even modern games that utilize strict checkpoint rooms (such as Alein: Isolation), don't limit saves.
REMake and Zero HD sold well, but not nearly as well as RE5 and 6. It indicates that they're is an audience out there for these types of games, but it's a baseless assumption to assume that it indicates there's hatred on a grand scale for the modern style, especially since Revelations 2 sold roughly as much as REMake HD in the same timeframe.
Uh, yes? Lol, by the time both 5 and 6 came out, 4 had established this style. And 5 had a demo that showcased the co-op features. No one was blindsided by what these games are. Besides, RE6's sells show the opposite of this. They started out slow, but eventually swelled to what they became: the second highest selling game in the franchise. It makes more of a case that once word got out about the game, more people came than left.
I think you're being biased. I'm not saying that everyone was ignorant of what the titles were like. After all, the partnership with Microsoft was a big deal that helped solidify the co-op avenue for the series and other online titles. Both also had demos, with the E3 one for RE5 and two for RE6 (Dragon's Dogma demo and a free demo). And those demos were *gasp* a part of that marketing.
But again, look at where sales were with 4....and then look at 5. There's something there that isn't just action, or even the RE name. Nor quality, given there was a slight drop in the critical reception of 5 compared to 4.
That's also going by your assumption that all those 5 and 6 players were familiar with RE prior, or even anything like the type that frequents places such as here or, casting the net wide, IGN. Mentioning the films again, those probably brought in loads of new consumers, whether it be from enjoying them or just on the name alone.
Of which, I think you demonstrated how big RE's mindshare has grown in the years with your attempt to wave away the recent REmake and 0master sales. These titles were silently put out. For a time, digitally only. And yet somehow, quite quickly, sold well for some old titles. And those were likely just whatever hardcore audience that already had interest and knew of the releases.
Somehow, it seems you're trying to compensate for what you assume is an attack on the recent installments you enjoy by the mere mentioning of just the questioning on if Capcom decided to market a horror themed RE, whether that be RE7 (unlikely), REmake2, or perhaps some other installment. I doubt the series is going to suddenly be something you don't like if Capcom made such an attempt. Even if say REmake2 sold a fantasy number like 8 million day 1, there's still 2 prior titles that sold amazingly well to not discount that trend due to one game.
Really, and I don't know how this can be made any clearer, this wasn't even something aimed at the quality or necessarily on the direction of the series. If anything, it was simply courting what numbers/revenue could be brought in from an installment that possibly isn't a mainline title or may not be what many assume automatically sells games. Personally, I've enjoyed each entry in different ways, and will be content so long as I like the narrative and gameplay (which RE6 was a mixed bag, especially with Simmons and Carla nonsense dragging it down). There's no angle or bias for or against modern or classic titles in the series.