When you have a trillion dollars stashed away. Then you wouldn't care about lawyer costs. That's the main reason big corps get away with doing what they are doing.
You would if laws demanded you always had to hand back users' data if you locked them out. That's the problem we don't have a proper legal framework to manage Google and other Big Tech.
In Europe there's no provision for GDPR rights to access to data to be removed on these non-grounds, so users would have the right to get access to their takeout.
Since Google's processes don't seem to give access to that, you might have to sue them. If they failed to show though, you should be able to get a default judgement eventually.
(note - GDPR is in some cases privately litigable, so you don't need to wait around for a snail's pace regulator - you can indeed sue for relief and get your legal costs back in the award. I'd expect a lawyer would take this case on a contingent basis given how clear-cut the GDPR is about your right to access your own data).
Europe has been really slow giving out fines. And even those fines are often less than a slap on the wrist. In France Google got fined $57mln for breach of GDPR. That's what Google makes in 3 hours.
That is why it is important to note that certain GDPR rights can be enforced yourself, without waiting on a regulator. Waiting on a regulator to bring the case is not your only option, since these are data subject rights, and the data subject (i.e. you) an sue directly.
Certain approved consumer groups are also able to do this as well - the regulators are too slow right now, but others are gearing up to start taking cases themselves.
