There are lots of reasons to pirate stuff, but this argument in particular boils down to "We should steal stuff now because maybe some day in the future I won't be able to use the paid version after they go out of business." And that is shitty.
You bought it, so go crack it now that the license check is broken and nobody will care. That's GOOD piracy. Support the creators, pirate when you can't or it's unreasonable to pay (more).
Don't just pirate to mitigate theoretical future inconvenience. Do it to circumvent actual inconvenience, or to get things you couldn't otherwise afford, or to say "fuck you" to big, shitty companies.
But pirating from a small-time dev just in case there are maybe license problems far in the future is not The Way