You can't write plausible near-future sci-fi any more. The writing and publishing process are so slow, and the pace of technology so fast, that any idea a writer can come up with is more likely to be old news than futurism by the time it sees print.
Of course, while I was typing that, I'll bet a new technology development occurred which will change all that.
Oh, crap! That means I'd better go find it, and learn how to use it!
Oh, crap! By the time I do that, it'll have been replaced! I'd better intuit its most likely third- or fourth-generation successor, guess how it will work, and start practicing with that now in hopes that during the first few instants after it becomes feasible, I'm already an expert at it.
Oh, crap! That'll put me behind the curve, won't it? I'd better figure out what will be the next thing after the fifth-generation successor becomes passe, and use
that, before it exists, to figure out what will follow
it.
Aaiigh! It took me too long to type that!