Prince Harry and Meghan Markle have generated a lot of headlines and commentary and are certainly popular, but according to one royal historian, there is really only so much they can do as an expatriate British royal.

For Tessa Dunlop, this was made clear by President Biden's recent visit to the UK and meeting with King Charles.

"Surrounded by pomp and ceremony, the visit was a reminder that royal attire is what sets royalty apart. What the Duke and Duchess of Sussex lack is the trappings," Dunlop commented to the Mirror.

"After all, no matter how famous they are (yes, no matter what disgruntled Spotify bosses say, the couple is still big news), there will always be someone wealthier and more famous in America."

Here Dunlop is referring to the recent news that the Sussexes' contract with streaming giant Spotify has ended, and some of the fallout from that, including Spotify's decision not to issue a statement in support of the Duchess following their split In.

"Over there, fame is the norm, not the magic and mystery that comes with the monarchy. As the Sussexes are discovering to their cost," the historian continued, "royalty does not travel well (the deposed Edward VIII learned this in the late 1930s). [To really flourish, it takes more than titles and money." Harry, barefoot and beanie-clad, could not compete with William in full-fledged honorary military attire. Meghan in Valentino and Givenchy gets less attention than the Duchess of Wales in a lover's knot tiara (formerly Princess Diana's) and a badge of the Royal Victorian Order."

Given the continuing popularity of royal romance movies and books, and Americans' continued fascination with the royal family as a whole, it is not hard to see where Dunlop is coming from.

She impressively concluded, "The tinsel, tiara, and turret speak volumes about America's love affair with the monarchy."

I don't know what the Sussexes' future holds for them professionally, and no doubt many concerns are being raised about where they can go from here. But I am confident they will figure it out.