Indeed the entry into many professions is degree only, the top 25% of pupils will fill the needs of those professions, but there are twice as many gaining entry to the degree courses offered. Very often they are low quality courses that take entrants with poor A Level grades or BTEC qualifications.
Like many I went through the on the job training, part practical, part classroom, qualifying after 3 yrs, then gained specialist qualifications. As a junior I had to do the menial work and make the tea, now semi skilled support workers do that, so there are no jobs for apprentices
Friends that are employers tell me they cannot find school leavers that are dedicated and will turn up and follow instructions long enough to learn a trade. They get bored and cannot cope with repetitive work, many jobs we all do are boring and repetitive but have to be done correctly. I do criticize schools for short term teaching where learning new things to a shallow level rather than applying what you have learnt.
At school you are allowed to “do the best you can” that’s not good enough, at work you have to achieve the correct standard and do that day after day