Is it important to hire a lead generation solution that can provide a great option for lead generation and also leave margin in a business so that a founder or a startup can focus on there business?
I have to say that from the hundreds of startups I have work with in one or other way, I have never seen someone "hire" a lead generation solution.
Most of the work on the early days is done "manually" or "by hand" and the grow is all worth to mouth (or some inventive growth hacking technique with some network effect).
Not sure what you are trying to do, but the number #1 focus of a founder/CEO in the early days is to be the lead generator for his/her business. "Focus on business" = generating the lead and closing the customers.