And the very reason we stopped offering $5-$6 packages long ago. We have found exactly what you said... a different clientele with far less support issues and more time for individual service when they do need it.
It also offers the flexibility to accommodate a client with unusual needs without having to move them to more expensive packages. (which usually upsets people) Even though we have never met in person; many clients seem like we know them because they have been with us for years and we understand their needs & what they do.
Of course everybody would love to have the "magic bullet" that will get lots more customers & profits but if you accept the fact that when competing with resellers who may be on "free" reselling accounts (we all know there has been a HUGE influx of reseller type "hosts" trying to make some quick money hosting these days) there's no competing with some of their hugely under-priced & oversold "plans". Even the person posting here happily handling the $1 market; he's already established there so why try to compete-he's happy there and I wouldn't be so to each his own.
We devote our efforts to maintaining loyalty and low turnover with what our "type" customers need & expect. We even started charging for our formerly "free" site builder because it encourages serious customers rather than "hoppers" trying different site builders (and there will always be some support with a site builder even though we say "use issues" are not covered in regular "support" as long as it's working properly)--but you'll have a few who will need a little help getting going, so why invest that "help" time in someone who may leave in a month or two to try some other builder instead of using that time to learn to build a good site?
These days you have to "pick your spot" in the "market" if you are a serious host and not a kid with a reseller plan. How can I compete with the huge ads from 1 & 1 and other hosts with the magazine ads, banners everywhere & such? So I leave them to their own and made the decision to be satisfied where we are... a lot less headaches than changing plans & constantly trying to find that "magic bullet".