I agree with that 100%. I've had interviews with every company I've applied to when it's been for a specific job. I don't always get results when I speculatively apply or apply for something which I might not be the best candidate for. But if it's something I know, then it's as simple as touching up the CV, writing a personalised cover letter about my experience in industry, what I can bring to the company, what I'm interested in working on etc.

People underestimate cover letters so much. Nothing says you've done your research than 300-400 words about why you want the job. Shotgunning CVs to a billion companies is a brute force approach.