Robinhood has been at the forefront of crypto adoption for a long time now. It was one of the first places to really make fiat to crypto during the last bull run crazy easy to access and to do it in a way that offered up buying of the assets as easy as a few clicks or swipes without much regulation backlash which is surprising.
I personally use Robinhood myself for buying and selling of crypto assets. Yes I know they take a cut and don't always give me the best price. But I'm ok with that for a number of reasons.
The first being tax reporting via this trading method is stupid easy compared to other options.
The second being I can take dividends I earn on stocks and if there's a hard sell off that day of crypto I might end up picking up bitcoin or another crypto instead of pushing that dividend back into a stock. This further diversifies my portfolio but most importantly at least with my current track record has been extremely profitable via long term holds over back and forth selling. It's pretty fun seeing 2%+ a day but when it goes negative you really have to keep those emotions in check.
Metamask
The next big update to Metamask is now allowing self-custodial crypto wallet holders that use it to buy cryptocurrency though the wallet itself. This is actully a massive update as there are reported to be over 21 million active monthly users of it. This is a huge onboarding ramp for fiat, dividend and stocks to now pick up swaths of crypto in seconds. No banks to block you or other craziness you still see to this day that happens when you try and use your own fiat money to buy assets like crypto.
This might not seem like a big deal but the more you think about it the more you start to realize that the inflow of fiat to crypto that could happen is actully staggering!
That's inflow because I'm pretty sure the way it's setup so far is you can't sell the crypto back out of metamask. (I could be wrong so correct me in the comments if you know for sure)
We also know that new crypto users continues to grow and that the current number is somewhere around 500 million people who are invested into crypto assets. That's actully still a small number being that there are over 8 billion people in the world.
*Screenshot taken from Worldometers.info
That's still billions more that could be getting involved. Now granted not every single person will there are countries and people that simply don't have access to these types of things or simply choose not to get involved. However it's still expected to grow and continue to do so at a rather rapid rate. So much so that I firmly believe in the next bull run everyone will have a crypto wallet and access to crypto that has the means to and it very well could be the last mega bull cycle that crypto sees.