Actually, everywhere also no value because of specialised knowledge. Take for example, Grab, a unicorn company. Their system and AI is so specialised, which other company will pay so well after 5 years? Maybe another company pay u for management qualities but that isn't worth 10k. Maybe 6k

in audit, accounts, HR where systems are pretty much the same, then maybe can boast that you have some super efficient skills or can introduce n manage some superb system to save money...

As a mid career my advice for youngsters... Big money comes with specialisation. Don't hop here n there to learn a variety. You can learn "along the way" but don't jump field. let's say... U do 5 years of audit in Mindef.. You can also do audit 5 years later with Grab.. But along the way u learn some policy, some HR.... But u never left audit Field. So u can be hired based on 10 years experience in Audit. IF.. Your director says u have a good chance to become his SM or AD if u go for some strange course.. Then OK... Because u r being groomed... Your boss need a reason to push you up.