what happened to salary transparency?

both internships i've had did not tell me the pay until the moment i was offered the position. now, i'm left wondering how much salary will be for full time when i graduate. it's quite frustrating knowing that if you just straight up ask, it's off putting.

what happened to salary transparency being a standard? why do some companies refrain from telling you how much they will pay you until the last moment? has anyone else experienced this?