Bloomberg terminals cost around $35,000 a year per seat, and the reason serious capital allocators pay for them without complaint is that the terminal is the measurement layer. It's the thing that makes yield comparable across issuers, tenors, structures, and jurisdictions.
Index providers, custodians, prime brokers, and rating agencies are the connective tissue that turns a coupon into an allocatable asset.
That infrastructure took decades to build, and most of it wasn't built just for the fun of it. The infrastructure exists because capital wouldn't allocate without it.
For instance, the rating agencies exist because pension funds couldn't buy bonds without a standardized credit scale. The benchmark indices exist because portfolio managers couldn't be evaluated without them. Continuous mark-to-market exists because risk desks couldn't function on end-of-quarter snapshots.
None of this is glamorous, and it is the reason yield in TradFi is a $130 trillion market rather than a hobby.
DeFi unbundled the yield and left that layer behind. Six years in, it has built yield sources by the hundred and almost none of the infrastructure that would make them legible.