Short version:

I came on board over 3 months ago to a small business that is developing management software for their niche industry.

They had been developing the software for almost 1.5 years although it's not that complicated. They chose the wrong vendor (and were cheap) so hence the delays.

3 months after coming on, I've got the development moving forward again but haven't really heard much from the other two partners.

I asked what they've been doing and got a vague "We've been networking and talking and getting a list of potential customers together."

I asked about why they aren't setting up meetings to demo the system and keep potential customers up to date. They didn't think it was a good idea as telling potential customers would lead them to Google where they could find a competitor and use them instead.

Should I continue?

I would have 25% vesting over 3 years. There is a market for this but I don't see much effort from the other two partners. Would it change after the software is ready? It's tough for me to tell.

Any suggestions? Anything specific I should bring up with them?