Only if they come in big enough numbers to meaningfully change the price. If you have a thousand new investors, they're not going to be able to have a meaningful impact on Bitcoin when it has a multi-hundred billion dollar market cap. There's just not enough new money coming in at that point to move the needle. Additionally, the higher the Bitcoin price goes, the more people you need to come in in order to move the price. That ever-expanding base, and ever-expanding rate of growth, is not sustainable, and eventually it was mathematically certain that the price would eventually stumble, the only question was at what point. Seems now we know the answer was $19,000 before the rally ran out of steam. I wouldn't expect the mania to take us back there.