A study was featured on Techcrunch about the number of seed-funded startups that won't get additional funding. It's very real, and something you should be considering as you build your business.
We're building businesses. Investment is one source of capital, but the best source is from customers. We should all be mapping out what it takes to get to sustainable revenue given minimum number of employees/costs/etc. Don't assume you'll be able to continue raising capital--or any at all.
So what's your plan to get to sustainability?