Yes. The math is easy for them. The increase is not just "more": it's a substantial "2X," or "double". Who wouldn't want "double" the power of their existing amp? Them:"100w+100w=200w, right?" LOL
The math is also easy for the dealers pushing the myth but in this case their math is actually quite correct: Bi-amping/wiring = Bi-profitability.
But bi-wiring is the byproduct of manufacturers not wanting to lose market share- few dealers had the clout to make that happen by themselves, it was reviewers who BSed the need for it and as soon as dealers on the wider market started asking for it because THEIR brands didn't have this, manufacturers added it to their speakers. At the manufacturing end, it doesn't cost much but if someone did this to their own speakers, it voided the warranty. Very few were going to use a separate amp for HP and LP, but the other culprit in this was Munster Cable, who IIRC, was the first cable seller to push "High and low frequencies travel at different speeds" crap, which we had to deal with. The fact that the cables might have been 25' long didn't seem to matter to people who asked for this, although some understood it after we explained that at that distance, it doesn't matter.
This was also at a time when magazine reviews were adding words like 'Current' and 'Amps (Amperes)' to the vocabulary, so some would come in and ask (often, in a way for them to challenge our knowledge) "How many amps does this put out?". That caused a bit of confusion when I would actually calculate that, showing that the number wasn't very large.
