Once the whistle goes, "Is live betting profitable?" comes down to timing. Live betting means placing a bet after the game has started, while the result is still open. In play betting and in game betting are other names for the same thing. What does it change? The odds move with every goal, point or turn of play, the markets open and close within seconds, and the bettor reacts to what is happening instead of guessing beforehand.
Live betting odds work from the same idea as any other price: the book estimates the chance of each outcome and keeps a margin on top. The difference is time. Before the game the chance rests on form and team news; in play it rests on the score, the minutes left and the flow of the match. Prices can swing hard, and the margin on live markets is usually wider than on the line set before the game.
Live betting against pre match betting is a choice between two kinds of information. A pre match price is set with days of data and plenty of time to compare. A live price reacts to what the bettor can see, but it moves fast, and anyone watching a stream sees the action a few seconds after the book does. That gap is why a live betting delay exists: an accepted bet waits a few seconds before it stands.
Is live betting profitable? For most people, no more than any other betting, and often less. The wider margin, the speed and the pull of the moment all work against the bettor. Why live betting is bad for many players comes down to impulse: a lost bet invites another at once. Live betting tips on sports forums rarely mention it. A live betting strategy worth the name is mostly restraint, fixed stakes and a plan set before kickoff.
Usually yes. Live markets tend to carry a wider margin than the line set before kickoff, on top of prices that swing hard.
After a goal, penalty or break of serve, the market freezes briefly and reopens at new prices; bets sent during the pause are refused.
By keeping a record of every live bet and its result, which shows the real effect of the wider margin over time.
Yes. Fixing stakes and a plan before the start is the core of any sensible live approach, because decisions made mid game are rushed.