Asteroid mining is a science fiction writer’s fantasy. It would cost trillion$ to get it using technology we do not have. Hexk, we barely made it to the moon.
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True with today’s technology.
But a lot can happen in 30 years. When Jefferson sent Lewis and Clark west in +-1806 ... the railroad wasn’t even science fiction. It was simply inconceivable.
Given the rate of technological change today—its likely there’ll be at least a couple things that will be commonplace in 30 years that are beyond science fiction today.
Just in the last 5 years the fracking revolution has added 50-100 trillion dollars worth of oil/gas reserves to the USA alone.
And we’ll all have flying cars, too. Just like the ones they promised us 50 years ago. The advances in technology have been mainly in electronics, but the laws of physics are tough to overcome.