Moriarty sat thinking. He had just our flanked the police and John Watson and had no choice now but to sit and wait until he could pounce again.
Not killing Sherlock was just a minor bump in the road, in fact, this was good news as he could see him dance and burn as he started to lose his friends around him and he knew who he was going to target- he was too stupid before to see it but now he knew how to get to the source of Sherlock's as he now knew that Molly Hooper was the key to get to Sherlock, he had found out that Molly had helped him on the roof all those years ago and had some how helped him get out of the building safely without any of his men knowing, and believe me he only had the best on hand.
If he got to Molly, he got to Sherlock, and if he got to Sherlock... well it might make Sherlock do something stupid like start taking drug's again ( he had a activate lifestyle) or use all the power he had to get her back.
All he had to do now was wait till Sherlock was back in 221B Bakers St and starting to thing that things were going back to normal, and with that thought in his mind, he knew he had the patience to last a little longer.
