Purely from a financial perspective, I think it is difficult to say that one is better than the other and ultimately that will depend on the amount you invest and whether or not that investment was successful. For me, It is interesting that both Seedrs and Crowdcube have taken a different approach to monetising their platform and in my opinion one is more aligned with their investors than the other. Please note, I am a user of both and find both to be very good and somewhat similar in many ways, my choices are purely based on the investment opportunities they offer at any given time.
Crowdcube – The more money they raise the more money they make. The relative success of these businesses is of little consequence to their financial performance, assuming that they can find other businesses who wish to raise money via their platform. Clearly if the businesses are successful then they may raise further funds through Crowdcube and it will be a good marketing story to attract other businesses. My concern would be that they may jeopardise the quality and due diligence they perform in pursuit of attracting more companies to raise via their platform.
Seedrs – Like Crowdcube they also charge the company raising funds, however they only charge the investors on their platform should a profitable exit be achieved. I understand this to be 7.5% https://www.seedrs.com/how-to-invest-in-startups. This is quite high, but the key point for me is that it is only charged on the profit you make. Unfortunately, the risk of early stage businesses failing is high (I hope none that our community members have invested in) and in those cases Seedrs will not have levied any charge on those investors for their investment in those companies. In my opinion, this model more closely aligns Seedrs financial performance with the financial performance of the companies raising on the platform and more importantly the investors they are bringing these opportunities to. Yes, I may end up paying more in fees via Seedrs, but I will only be paying that money out of money that I have made and not money that I have invested.
Final thought… It might have been more difficult for Crowdcube to bring in the charge on exit model as they already have some large successes (Monzo, BrewDog, Revolut) and should an investor retrospectively get hit with this new charge on previous investments that have significantly outperformed, it would be unfair and would no doubt result in considerable backlash.