It's not just Fidelity. No US broker allows buys on an EM ticker from what I've heard. Canuckleheads can though.
But when I asked the question on my computer, I got this answer.
Yes, you can buy a stock that is on the Expert Market. However, the process may vary depending on the broker you choose. Some brokers may allow you to buy stocks directly from the Expert Market, while others may require you to call or use a broker-assisted service. It's important to check with your broker to see if they offer access to the Expert Market and to understand the specific steps and requirements involved in making a purchase.
You can lead a horse to water. But you can't make him get down on one knee and do an Al Jolson impression!