It's been "very close" for the past 20 years. And in another 20 years, it will no doubt still be "very close". For example, the European ITER facility is optimistically predicting to have sustained fusion going by ... 2035. That's not even an actual electric power generating facility, just a demo that fusion can get more energy out than put in. Then, even if it does, works, it won't be able to compete economically with any form of electricity generation. Costs for ITER are already around $25 billion and climbing.