bitcoin is not difficult to buy only that most of the exchanges now require kyc there are only a few alternatives to buy it without kyc like bisq and atm (within certain limits) or localbitcoin, then i do not care about it as a broad daily payment method with mass adoption but at a speculative level to make gain...
You can still buy Bitcoin without going through exchanges and especially do not need KYC implementation. Many traders are willing to sell Bitcoin to you and accept payments with FIAT. But prices are often higher than listing rates on exchanges, and they only take large amounts of transactions.