Thanks Varun - very good point!
Kodjo - Thanks. I just added a comment to my question. Because I noticed through your question that it is an often raised concern but also a fact of life that single founders don't get funding - always exceptions but very rare.
For almost any investor there are two requirements that a startup has to come up with:
1) Having a bold idea that has a significant impact on a large market
2) Having a stellar founders team of two or more founders
These days single founders have almost no chance to get funding - take it as a fact of live. There is a multitude of reasons - some of them:
* It's almost impossible for one person to be a developer/producer/creator/servicing person and a sales and marketing promoter at the same time. And running a company with high potential it's literally impossible.
* People with big ideas attract big player to join the game. If not, the idea is bad or the person is not able to communicate and lives in isolation (relatively speaking) both not the fabric of a great founder
* People who attract a stellar team right out of the gate will most likely also attract customers, business partners ... and .... investors
I myself would not invest in a single founder company unless I've seen at least two of those who actually succeeded.
Find a cool person helping you - it's so much more fun to work through the rough times with somebody else anyway. ;)