I yield to no one in empathizing with cash-strapped startups. However, the broader economy has many companies which do business on the Internet and which have actual money. Not "whine about the difference between $10/mo and $20/mo at their particular size" money, which the CrazyEgg team has probably seen more than I care to speculate. Not even "replace low-paying day job with sales" money. I'm talking "Have (teams of) full-time employees whose only job is to do analytics" money and "Pay $150 a day for the hotel room that their high-priced consultant stays at without batting an eye" money.
It makes a lot of sense, especially for a product which you're going to sell in a high touch fashion, to say "We're going to focus on that sort of customer. Folks who perceive $20 or so of value a month from their funnel optimization are welcome to check out our competitors."