Unless you're like one of those guys who only places live. I've done it before and betting on a 90 minute match, several outcomes, like scores every 10 mins, next to score, next corner, next card, all those can be really exciting and accumulate a large wager if your initial bet's big like most sports betters anyway:) Of course, doesn't change that it takes longer in general.
Yes, it is really a hard task to reach higher levels just through sports bet wagers. However I find reaching of higher rank through sports bet wagers a secure way than moving forward through casino wager. Majority of the casino wagered gamblers could've experienced massive losses reaching higher levels.
Well, the reason is that most of the time you are gambling very little with that, compared to regular casino games and that is the biggest difference. You could wager on a dice game with 10$ and have like a million dollars wagered in a week if you do non-stop (I suppose? I do not know the pace) whereas you would need a lot more time and a lot higher wagers to do that with sportsbook, you would need like 100k each bet for 10 games, how many games do people bet at most in a week, 30? 40? That is still like over 40k per bet.
This is why I think sportsbetting is not the way to go if you are aiming at the vip levels, just focus on your gambling and ignore the vip levels because you should get them that way anyhow, if you are not doing that then maybe you should not do it any other way neither and forget about VIP all together if it requires you to do something you are not comfortable with.