If you have tech knowledge and some track record, I wouldn't be too worried. Unemployment in tech is not very high at all, and lots of companies still seem to have trouble filling positions. Raising venture capital might get harder, but I would bet that you can 'fail' back into a tech job or consulting in 6 months if you need to. Especially if you build anything interesting in your startup; regardless of whether it succeeds commercially, having shipped a product looks good on a CV.