Is beta only be available for big investors?
The beta should be available to anyone but if you apply and get whitelisted.
Exactly, that's why it's called OPEN beta

I don't think big investors want to bother with open beta testing XD they will leave that to others.
I agree, earning is what they are interested in

Well they might invest even more if they like the beta.
Hm, I'm not sure about that. I think the serious investors have made up their mind on account of the project idea and know that the beta can have it's flaws.
I believe there are several types of investors, as in most crypto project, but the goal is mostly common and that is earning
