What I want to know is what exactly pushed such big company to accept this technology. We know in this industry how beneficial cryptos are as a mode of payment but things are different in the eyes of the masses wherein the impression is not that good towards cryptocurrencies. IMO what PayPal did, contributed to what Visa is about to make. As I've mentioned before, a domino effect could be triggered once a huge company makes a move and that seems to happen.
You basically answered your own question, companies that do not innovate are left behind by those that do, Visa saw what PayPal did and they could not allow them to take advantage on the market or they are never going to overcome the lead that PayPal will get, this is what it is called first mover advantage, and we can see a perfect example of this in this market, bitcoin is the first cryptocurrency and it still the best and while many coins have a very similar technology to the one bitcoin has bitcoin still remains very comfortably on the lead because it has our trust while those coins do not, and Visa is afraid an scenario like that happens to them.