Harry, 36, told James Corden in March he stepped back from royal duties because the British press was “toxic” and “destroying” his life.
And Mr Scobie, a leading royal commentator, has spoken to People about the move.
He claimed: “The hardest part for them was taking those initial steps away from their royal roles.
- Prince William has 'moments of self-doubt' about future royal role as King
- Meghan left feeling 'hurt' by Kate who 'never gave her benefit of the doubt', says source
- Meghan Markle pays tribute to Princess Diana in new speech about prioritising women
- Meghan talks in 'the style of the Queen' in first appearance since Oprah, says expert
- Diana and Prince Charles' Greek honeymoon cruise was devastated by secret 'blow'
- 'Stunning': Kate Middleton in bright blue £60 blazer for International Day of the Midwife
- Prince William hit with backlash from Harry and Meghan Markle supporters after boycott
- Princess Beatrice has ‘unique’ engagement ring from Edoardo with sweet meaning
Harry and Meghan found leaving royal roles ‘harder than ever imagined’ – ‘All mapped out’
“That was harder than they would ever have imagined. They had had it all mapped out in their heads.”
Harry and Meghan had hoped to continue in a “half in, half out way”, Mr Scobie said.
He told People: “They knew that they had to change things, but what they had actually planned wasn’t actually what was best.
“They tried to find a way to compromise.
- Kate Middleton parenting: Inside the Duchess of Cambridge's lavish royal nursery
- The Kate effect: Duchess regularly wears ‘affordable’ jewellery to appear more ‘relatable’
- ‘Frostiness that was horrible to watch’: Harry and William 'brutal' - ignoring one another
- Pregnant Meghan Markle celebrates Mother’s Day with donation to homeless women's group
Buckingham Palace confirmed the Duke and Duchess would be stepping away from their royal duties
“Those ties to the institution [of the monarchy] would have still been strong and there would have constantly been issues about financial endeavors and the business decisions they made.”
Mr Scobie added: “It’s only now that they’ve found a life that supports their interests and enables them to focus on the things that are important to them.”
A statement from the Palace said the royals were “saddened” by Meghan and Harry’s decision but that the Sussexes “remain much loved members of the family”.
Ms Davies explained how their move away from royal duties and to the US will allow them to take on the world stage.
She wrote: “Now, expecting their second child and living in an £11m mansion in Montecito, California, the world rather than the UK is their chosen stage.
“That much has been evident from the moment they selected South Africa, and a meeting with Archbishop Desmond Tutu, to properly show off their baby son, Archie.”
Prince Harry and Meghan Markle now live in Montecito, California
Ms Davies also claimed the whole experience has been an “emotional rollercoaster” for Prince Harry.
She wrote: “For Harry, who has now given up everything, it has undoubtedly been an emotional rollercoaster.
“He allowed a glimpse of his inner turmoil when, in a speech at a private London dinner last year for his charity Sentebale – of which he retains his patronage.”
At the Sentebale event, Prince Harry said: “Our hope was to continue serving the Queen, the Commonwealth and my military associations without public funding. Unfortunately that wasn’t possible.”
Source: EXPRESS CO UK