In business, nothing can be considered as safe. Because ups and downs are the common features of the business and also whenever you are making profit from a competition it means someone is doing loss and you are getting it as profit. This is called the competition of the business policy and I think every business is done by following this. I am a crypto trader and also I have some physical business. So this is my thought about your statement.
Ofcourse, there's no kind of business here on earth that is actually safe and assured to make profit like a 100% guaranteed. It's very common for business to have certain risks and failures to overcome that's why proper planning of when and how to execute is the best way to atleast make more profits than losing.
Crypto industry is here to help people understand the market and economy better, it depends usually how you see it, I mean, just take some research and study it first to acquire some knowledge before putting some funds to it. Because if you don't, you'll end up losing it, it's like going to war with blindfolds.