I think over the last 2-3 decades standards have fallen across the board because ideals behind the original purpose of such services, to prevent underperformers from failing out, have morphed into a general administrative goal. I went through college in the early 10s, and there was a very clear implicit bias in all grading - failing students didn't look good for professors, departments, or schools in general now. The result was a consistent sort of unspoken grade padding. The goal of making college accessable to increasingly greater swaths of the population is amicable, but it rests on the again implicit assumption that a simple change of environment allows everyone to thrive equally - but the result is overall reduced rigor and a general watering down of the very meaning of a college degree.
More people may be going to school, but the distribution of talent hasn't changed much, and by the time you're entering college there is a minimum level of intrinsic ability necessary to really grasp technical degrees that no amount of tutoring will mitigate.