Why don't VCs help founders prepare for failed fundraising?

The single biggest problem I faced running a startup and have seen lots of venture-backed founders face is running out of money and shutting down.

In the US, as low as 30% of startups are able to raise Series A after a Seed round. The graduation from Series A to Series B is equally abysmal.

My issue is that VCs don't prepare founders for this situation, for them it's all keep growing, keep scaling. If you can't then shut down.

So you see lots of good businesses, revenue-generating, growing steadily but still not enough to stay alive on the venture path.

Are there any investors that actually help their portfolio companies when things aren't going so well?