Let's talk a bit about Roglič here. This is a guy that almost got killed while ski jumping and discovered he likes the bike when he was in rehabilitation. This is also a guy that rode 2000 km in a year on a bike and called director of Adria Mobil bike race team that he did 2k this year and would to turn pro. Every director would laugh and put down the phone but this guy gave him a chance to train. Remember Roglič was 22 or 23 at the time. Later another team gave him a huge chance (Jumbo Visma) and the rest is history. Personaly, he hates to be on the spotlight. He doesn't like press, he doesn't like to be swarmed by everybody all the time. He loves to fly under the radar and just...win. One of the reasons he doesn't really want yellow jersey too soon.
And he's a guy that is VERY gratitude to JV for having him and he'll to EVERYTHING they want him do to the T. If they would tell him to burn the hill down today, he would if he could. But they don't want that just now. They are afraid to spend too much the first week (Giro 2019), they don't want him in the spotlight too much, because he looses focus and energy.
This TdF is only the third GT that JV is going for the win. Giro 2019 was the first, then Vuelta 2019 and not TdF 2020. Every time with Roglič. On Giro he came in too hot, had bunch of horrible problems and sickness and still managed 3rd place. In Vuelta they had a lot more control, better team, better Roglič in all three weeks and a win at the end. TdF 2020 is only third GT they are trying to win. It's a long one and most important GT of them all. So they don't want to go all in just now. Today many of their doms got dropped quick. They are not as strong as everybody thought, so they need to be careful. And they are. They control as much as possible and will attack when needed. I think the best is yet to come.