Specifically, construction is more tied to either real estate, hospitality or government contracts. These often raise money via a bond (debt) offering or an equity with a very well-worn finance model. These projects require a lot of upfront capital (billions not unusual for roads) and have long time horizons, with log() or linear returns, and have a very well understood model for packaging as a risk asset. These risk assets attract a certain kind of investor, or a certain risk profile in a large fund's portfolio.
Venture capital as an asset class is a bit different. The expectation is that an idea can be proven out relatively cheaply, and the business will scale since the major leverage is intellectual property (vs physical assets). The expectation is also that most business will fail, with maybe a handful of successes capturing most of your return. VC's investing in startups with risk-appetite LPs, is very different than a real estate developer going to a large bank to build a housing project. The VC model is closer to investing in a TV show than a construction project.
Put simply: Investing in a moderately sized government construction project ($2b or so for a toll road in latin America) is a totally different finance product than a startup that leverages IP. The aggregation of risk is also different (VC vs say, REITs) and the devices are different (equity vs debt / leverage). Most investors either run a balanced fund at a large size, or specialize, since they are so different.
EDIT: Also important is relative size of each investment asset class. VC is hilariously small (222 billion in 2022) in comparison to something like energy (2.4 trillion in 2022). VC gets a lot of press but for most professional investors "real funds" start at about a billion table stakes.