As companies become more global, it can be difficult to schedule high level executives for face to face interviews in a timely manner and these video tools help solve that problem. The key to remember when asked to do a video interview is to not let the technology (or any technology-related issues you encounter) act as a barrier to making a connection with your interviewer.
Candidates' reasons for moving positions are always varied and personal; however, when speaking to candidates about why they are interested in making a move, there is one reason that I hear raised time and time again: lack of mentorship.
It is a mistake to think that the hard work is done once you have signed your offer letter; this is actually just the beginning of the process of joining your new firm. Becoming a passive participant in the process after signing the offer letter can create problems and feelings of disappointment on both sides.
While your personal level of risk tolerance should of course be a factor that gets weighed in any major decision, including a career change, I do think we should all remember that sometimes it takes a little risk to make it rain.