I do not agree trading and investment are getting harder and harder., because you do not have the capital or knowledge so say so.
In my opinion it is not too difficult to invest in crypto, we only need to buy coins at low prices and hold up to the target sale reached.
It's not always the same for every one of us. I feel it too mate, trading becomes harder because of the growing community. There is a significant growth in number of traders in the previous years making the prices more unstable than ever, you can literally see the prices moving unprecedentedly. Though buying low and selling is still the best strategy to use, you cannot guarantee your winnings with sticking on it, you need to come up with something new that can cope up with the market.
Then for trading we must be smart at reading the market and can also apply risk management. If the matter can be done well, trading
or investment is easy to do. It can even be used as full time jobs.
I disagree on the latter words that you said. I can't imagine trading becoming a full time job, how can you do a sustaining profit every day? unless you're already rich so it would be nothing to you to lose $1000 in a day.