He's concerned that some platforms won't conduct due diligence on companies wanting to raise funds in order to get the number of offers they need to stay viable.
Josh Daniell, co-founder of early entrant Snowball Effect, said there's a risk the whole industry will get tainted by newcomers that fail to provide companies seeking funds and investors with good experiences.
"There's a growing market overall and for what equity crowdfunders cater for but that's in danger of being drowned out in the New Zealand market by there being too many platforms," Daniell said.
Propellar New Zealand said there is no rush to bring its first offer to market and that's unlikely to happen until the end of this year or early next year.
"The market has already shown it is being discerning and not accepting everything being put in front of it," said Paul Hocking, one of its two directors.