I think 37signals won't do that for the same reason Apple won't make a $399 laptop, they don't want to be in that business. That's not the business they're in,

I think 37signals won't do that for the same reason Apple won't make a $399 laptop, they don't want to be in that business. That's not the business they're in, and knowing what business you're in and not in is extremely important. I'm sure there are a dozen Basecamp competitors with $10/mo plans that would probably fit your needs.